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#2701 2014-06-21 00:54:00

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1838 is perfect. Good work!

#1839. When a plot is sold for #18,700, the owner loses 15%. At what price must the plot be sold in order to gain 15%?


Character is who you are when no one is looking.

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#2702 2014-06-21 02:19:08

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,658

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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#2703 2014-06-21 03:26:50

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi anonimnystefy,

The solution #1839 is perfect. Keep it up!

#1840. A fruit seller sells mangoes at the  rate of $9 per kilogram and thereby loses 20%. At what price per kilogram he should have sold them to make a profit of 5%?


Character is who you are when no one is looking.

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#2704 2014-06-21 04:06:52

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#2705 2014-06-22 00:46:03

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1840 is absolutely right! Good work!

#1841. If selling an article is

of its cost price, what is the profit percentage in the transaction?


Character is who you are when no one is looking.

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#2706 2014-06-22 01:51:24

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2707 2014-06-23 01:04:32

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1841 is correct. Neat job!

#1842. The ratio of the cost price and the selling price is 4:5. Find the profit percent.


Character is who you are when no one is looking.

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#2708 2014-06-23 12:32:17

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2709 2014-06-24 01:18:48

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

#1843. By selling a pen for $15, a man loses one-sixteenth of what it costs him. Find the cost price of the pen.


Character is who you are when no one is looking.

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#2710 2014-06-24 05:31:25

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2711 2014-06-24 17:36:33

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1843 is correct. Good work!

#1844. Find the zeros of the following quadratic polynomial and verify the basic relationship between the zeros and the coefficients.

.


Character is who you are when no one is looking.

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#2712 2014-06-24 21:21:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2713 2014-06-25 14:25:55

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1844 is correct. Marvelous!

#1845. If the length of a certain rectangle is decreased by 4 centimeters and the width is increased by 3 centimeters, a square with the same area as the original rectangle would result. Find the perimeter of the original rectangle.


Character is who you are when no one is looking.

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#2714 2014-06-25 19:10:43

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2715 2014-06-26 01:45:03

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1845 is correct. Marvelous!

#1846. If by selling 110 mangoes, the cost price  of 120 mangoes is realized, find the gain percent.


Character is who you are when no one is looking.

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#2716 2014-06-27 15:20:59

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

#1847. The altitude drawn to the base of an isosceles triangle is 8 centimeters and the perimeter is 32 centimeters. Find the area of the triangle.


Character is who you are when no one is looking.

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#2717 2014-06-27 18:52:38

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2718 2014-06-28 01:26:34

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

#1848. The base of a parallelogram is twice its height. If the area of the parallelogram is 72 square centimeters, find its height.


Character is who you are when no one is looking.

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#2719 2014-06-28 06:00:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2720 2014-06-28 11:53:12

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

#1849. Find the area of a rhombus one side of which measures 20 centimeters and one diagonal 24 centimeters.


Character is who you are when no one is looking.

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#2721 2014-06-28 13:03:24

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi ganesh;

You are correct on #1848, I inadvertently switched the numbers.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2722 2014-06-28 23:19:30

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1849 is perfect. Neat job!

#1850. The difference between two parallel sides of a trapezium is 4 centimeters. The perpendicular distance between them is 19 centimeters. If the area of the trapezium is 475 square centimeters, find the lengths of the parallel sides.


Character is who you are when no one is looking.

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#2723 2014-06-29 00:41:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2724 2014-06-30 00:39:33

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,169

Re: Oral puzzles

Hi bobbym,

The solution #1850 is correct. Magnificent!

#1851. A sector of

, cut out from a circle, has an area of
square centimeters. Find the radius of the circle.
.


Character is who you are when no one is looking.

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#2725 2014-06-30 00:52:50

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,668

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

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