Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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%?

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

**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,018

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

The knowledge of some things as a function of age is a delta function.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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%?

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

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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?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

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

Hi bobbym,

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

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

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..

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,164

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.**

**Online**