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#2076 2012-08-12 00:11:32

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym,

The solution #1552 is correct. Excellent!

#1553. Two right circular cylinders of equal volumes have their heights in the ratio 1:2. What is the ratio of their radii?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2077 2012-08-12 05:52:49

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

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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#2078 2012-08-12 19:20:06

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

Hello

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#2079 2012-08-12 23:54:26

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1553 is perfect. Brilliant!

#1554. A well with 14 meters inside diameter is dug 10 meters deep. Earth taken out of it has been evenly spread all around it to a width of 21 meters to form an embankment. What is the height of the embankment? (Use pi = 22/7)


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2080 2012-08-13 02:56:10

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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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#2081 2012-08-13 02:56:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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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#2082 2012-08-13 23:59:22

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym,

The

.

#1555. If (a + b) : (b + c) : (c + a) = 6:7:8 and (a + b + c) = 14, then find the value of 'c'.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2083 2012-08-14 03:50:20

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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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#2084 2012-08-14 22:12:28

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym,

The solution #1555 is correct. Neat job!

#1556. $1210 is divided among A, B, and C so that A : B = 5 : 4 and B : C = 9 : 10. Then, how much does C gets?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2085 2012-08-15 00:10:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

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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#2086 2012-08-15 07:27:28

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

Hello

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#2087 2012-08-15 22:46:11

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1556 is perfect. Good work!

#1557. The salaries of Roger and Steve are in the ratio 2 : 3. If the salary of each is increased by $4000, the new ratio becomes 40 : 57. What is Steve's present salary?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2088 2012-08-15 22:51:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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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#2089 2012-08-16 21:32:48

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

Hello ganesh;

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#2090 2012-08-17 01:10:52

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1557 is correct. Good work!

#1558. The third proportional to 0.36 and 0.48 is ____________


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2091 2012-08-17 05:09:51

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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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#2092 2012-08-17 23:57:06

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym,

The

#1559. In a ratio, which is equal to 3 : 4, if the antecedent is 12, then the consequent is ______________


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2093 2012-08-18 07:04:04

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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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#2094 2012-08-18 15:21:39

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

Hello ganesh;

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#2095 2012-08-19 01:13:28

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1559 is correct. Neat work!

#1560. If 2A = 3B = 4C, then A : B : C is ______________


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2096 2012-08-19 01:15:41

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

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

#2097 2012-08-19 02:42:58

dlamacharles
Member
Registered: 2012-08-19
Posts: 3

Re: Oral puzzles

1. 45
2. 7
3. 120
4. 7 and 10

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#2098 2012-08-19 19:00:30

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

Hello

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#2099 2012-08-20 01:09:51

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,030

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1560

Good work, Denominator!

#1561. The average age of three boys is 25 years and their ages are in the proportion 3 : 5 : 7. Find the age of the youngest boy.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#2100 2012-08-20 07:54:22

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,703

Re: Oral puzzles

Hi ganesh;


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

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