# Fractions and Percents

• May 20th 2008, 07:44 AM
princesscandygal
Fractions and Percents
what is 13/40 as a percentage and a decimal
plzz help (Speechless)
• May 20th 2008, 08:12 AM
masters
One way is to do this:

$\frac{13}{40}=\frac{x}{100}$

Cross multiply and solve for x.

$40x = 1300$

$x=32.5$

So, substitute back into the expression:

$\frac{32.5}{100}$

Since percent means "per hundred",

$\frac{32.5}{100}$ means 32.5%

To convert to a decimal, simply move the decimal left 2 places and drop the % sign. Thus 32.5% = .325
• August 7th 2008, 06:35 PM
kimmy marie
percent to fraction
what is the answer to 70% to fraction?
• August 8th 2008, 05:29 PM
euclid2
The easiest way is to simply type 13/40 into your calculator (13 divided by 40) and multiply there product (.325) by 100 =32.5%.
• August 9th 2008, 03:42 AM
Simplicity
Quote:

Originally Posted by kimmy marie
what is the answer to 70% to fraction?

A percentage is a value out of hundred.

So, 70% is equal to $\frac{70}{100}$

By dividing the numerator and the denominator by 10, This simplifies to:

$\frac{70}{100} = \frac{7}{10}$
• September 1st 2008, 04:14 PM
Maths_Tutoring
Your answers are so clear and thoroughly explained Air, +1 rep point from me, keep up the good work :)
• September 18th 2008, 04:39 AM
Parveen Kaur
Percentage of fraction
13/40 x 100 % = 32.5%

To change any fraction to%, times by 100%, simple
• September 18th 2008, 10:43 AM
masters
Quote:

Originally Posted by Parveen Kaur
13/40 x 100 % = 32.5%

To change any fraction to%, times by 100%, simple

You mean "times by 100", not "times by 100%", don't you? If you multiply by 100%, that's the same as multiplying by 1.
• September 18th 2008, 05:42 PM
Parveen Kaur
Fraction as %
yes, 100% because you can't times the fraction with any other number except 1 (100/100)
But your answer will be in 32.5% as you are not using 1/100 while doing your calculation.

13/40 x 100 %
=13/40 x 100/100
= 32.5%
• September 19th 2008, 03:50 AM
SHANON
maths
A percent is a ratio whose second term is 100. Percent means parts per hundred. The word percent comes from the Latin phrase per centum, which means per hundred. In mathematics, we use the symbol % for percent.
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SHANON

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