PSAT Math : How to find the part from the whole with percentage

Study concepts, example questions & explanations for PSAT Math

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Example Questions

Example Question #11 : How To Find The Part From The Whole With Percentage

 

 

 

 

A school is made up of 400 students. Each student must belong to one of the four clubs shown in the chart below. How many students are in chorus?

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Possible Answers:

Correct answer:

Explanation:

You must first determine the percentage of the students in chorus. To do this, subtract the other percentages from 100: 100 – (35 + 29 + 24) = 12.

Therefore, 12% of the 400 students at this school attend chorus.

To determine the number of students in the chorus, multiply .12 (12%) by 400.

0.12(400) = 48

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