Question

If 5 out of 25 people like chocolate ice cream, what percent of the people do not like chocolate ice cream

A.20%
B.5%
C.80%
D.30%

Answer 1

First, count the people who don't like choco ice cream
dont like = whole - who like
dont like = 25 - 5
dont like = 20
There are 20 people who dont like choco ice cream

Second, transform the number of people to percentage.
percentage = number who dont like/whole
percentage = 20/25

Percentage means per hundred, so we need to change the denominator to 100. To change the denominator, it should be multiplied by 4. The numerator also need to be multiplied by 4.
percentage = 20/25
percentage = (20 × 4)/(25 × 4)
percentage = 80/100
percentage = 80%

The answer is c. 80%

Answer 2

100 - ((5÷25)x100),
hence C. 80%