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#4976 2016-07-05 18:18:13
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3064 is correct. Neat work, bobbym!
#3065. A passenger train takes 2 hours less for a journey of 300 km, if its speed is increased by 5 km/hour from its usual speed. Find its usual speed.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4977 2016-07-06 03:29:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4978 2016-07-07 17:20:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3065 is correct. Neat work, bobbym!
#3066. The sum of areas of two squares is 640 square meters. If the difference of the perimeters is 64 m, find the sides of the two squares.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4979 2016-07-07 18:02:51
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4980 2016-07-10 17:17:14
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solutions in #3066 are correct. Good work, bobbym!
#3067. The product of Tanay's age (in years) five years ago and his age ten years later is 16. Determine Tanay's present age.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4981 2016-07-10 18:12:35
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4982 2016-07-11 17:41:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3067 is correct. Neat work, bobbym!
#3068. The sum of the ages of a father and his son is 50 years. Five years ago the product of their ages was 175. Find their present ages.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4983 2016-07-11 18:10:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4984 2016-07-12 16:44:12
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3068 is correct. Neat work, bobbym!
#3069. The sum of the ages (in years) of a son and his father is 35 years and the product of their ages is 150 years. Find their ages.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4985 2016-07-12 18:14:43
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4986 2016-07-13 17:25:58
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solutions in #3069 are correct. Well done, bobbym!
#3070. A motor boat whose speed is 15 km/hour in still water, goes 30 km downstream and covers back in a total of 4 hours 30 minutes. Determine the speed of stream.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4987 2016-07-14 01:47:08
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4988 2016-07-14 16:57:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3070 is correct. Neat work, bobbym!
#3071. A shopkeeper buys a number of books for $1200. If he had bought 10 more books for the same amount, each book would have cost $20 less. How many books did he buy?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4989 2016-07-14 17:05:25
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4990 2016-07-15 17:44:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3071 is correct. Good work, bobbym!
#3072. Find the value of k so that the following quadratic equation has equal roots:
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4991 2016-07-15 18:18:59
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4992 2016-07-17 17:11:12
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3072 is correct. Neat work, bobbym!
#3073. For what value of k does the quadratic equation
have equal roots?It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4993 2016-07-17 18:34:53
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4994 2016-07-18 16:38:49
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3073 is correct. Neat work, bobbym!
#3074. If the equation
has equal roots, find the value of k.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4995 2016-07-18 18:01:34
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4996 2016-07-19 18:43:10
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The solution #3074 is correct. Neat work, bobbym!
#3075. For what value(s) of k does the quadratic equation
have real and equal roots?It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4997 2016-07-19 19:19:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#4998 2016-07-20 17:21:41
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The two solutions in #3075 are correct. Excellent, bobbym!
#3076. For what value of k the equation
has real and equal roots?It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4999 2016-07-21 03:02:04
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#5000 2016-07-21 16:23:14
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,171
Re: Oral puzzles
Hi;
The two values of k are correct. Excellent, bobbym!
#3077. Find the discriminant of the quadratic equation
and hence find the nature of its roots.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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