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#2101 2012-08-20 16:49:10

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

Re: Oral puzzles

Hello

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#2102 2012-08-21 01:07:13

ganesh
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Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym and Denominator,

Good work, bobbym!

#1562. The sides of a triangle are in the ratio 1/2 : 1/3 : 1/4 and its perimeter is 104 centimeter. What is the length of the longest side?


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#2103 2012-08-21 01:11:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#2104 2012-08-21 01:12:24

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,417

Re: Oral puzzles

Hi ganesh


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#2105 2012-08-21 07:19:30

Denominator
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Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

Hello

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#2106 2012-08-21 23:53:31

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym, anonimnystefy, and Denominator,

The solution #1562 is correct. Neat job!

#1563. If 10% of x = 20% of y, then x : y is equal to _________________


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#2107 2012-08-21 23:56:20

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2108 2012-08-22 07:25:59

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

Re: Oral puzzles

Hello

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#2109 2012-08-22 22:53:24

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym and Denominator,

The

Correct, bobbym! Well done!

#1564. If 0.4 of a number is equal to 0.06 of another number, the ratio of the numbers is _____________


Character is who you are when no one is looking.

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#2110 2012-08-22 22:59:56

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2111 2012-08-24 00:06:10

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym,

The solution #1564 is correct. Neat job!

#1565. Gold is 19 times as heavy as water and copper is 9 times as heavy was water. In what ratio should these be mixed to get an alloy 15 times as heavy as water?


Character is who you are when no one is looking.

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#2112 2012-08-24 00:25:12

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2113 2012-08-24 23:43:24

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym,

The solution #1565 is correct. Smart work!

#1566. Find the mean proportional between 0.08 and 0.18.


Character is who you are when no one is looking.

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#2114 2012-08-24 23:46:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2115 2012-08-25 08:01:56

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

Re: Oral puzzles

Hello

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#2116 2012-08-26 00:29:48

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1566 is correct. Neat job!

#1567. A shopkeeper sells one transistor for $840 at a gain of 20% and another for $960 at a loss of 4%. Find the total gain or loss percent.


Character is who you are when no one is looking.

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#2117 2012-08-26 06:16:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2118 2012-08-26 19:51:19

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

Re: Oral puzzles

Hello

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#2119 2012-08-27 01:22:46

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym and Denominator,

#1568. If loss is 1/3 of Selling Price, find the loss percentage.


Character is who you are when no one is looking.

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#2120 2012-08-27 04:35:02

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2121 2012-08-27 07:12:46

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

Re: Oral puzzles

Hello

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#2122 2012-08-28 00:13:44

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym and Denominator,

#1569. The percentage profit earned by selling an article for $1920 is equal to the percentage loss incurred by selling the same article for $1280. At what price should the article be sold to make 25% profit?


Character is who you are when no one is looking.

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#2123 2012-08-28 00:28:34

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,727

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#2124 2012-08-28 17:42:31

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

Re: Oral puzzles

Hello Ganesh

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#2125 2012-08-29 00:34:47

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,586

Re: Oral puzzles

Hi bobbym and Denominator,

The solution #1569 is perfect. Marvelous!

#1570. The difference between a number and its two-fifth is 510. What is 10% of that number?


Character is who you are when no one is looking.

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