Question #71126

1 Answer
I.F.M
Mar 29, 2017

35%.

Explanation:

There are two ways to find the answer.

If you have/are allowed to use a calculator, you can simply evaluate the fraction.
#7/20 = 0.35#
then multiply by 100(move the decimal 2 places right).
0.35 * 100 = 35%

If you are not allowed to use a calculator, then multiply the fraction to get an equivalent fraction that is out of 100.
(you want 100 as the denominator. the % symbol means out of 100)

20 is the denominator of this fraction. #20 * 5 = 100#

So the numerator and denominator must be multiplied by 5.

#7/20 * 5/5 = 35/100#

(This does not change the actual value of the fraction because you are multiplying the fraction by #5/5# which is 1.)

You get #35/100#, which is the same as 35%.

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