Practice!

Sample Problem

At a school, 60% of the students are boys. If there are 40 more boys than girls in the school, how many students are in the school?

students

Solution

First find the percentage difference:

The percentage of girls: 100% – 60% = 40%

Description: Machine generated alternative text: 一40蚝一
Girls
BOYS

The percentage difference: 60% – 40% = 20%

Then use the formula: Whole = Different amount ÷ Percentage difference

Difference amount: 40 students

Percentage of difference: 20%

Thus, whole = 40 ÷ 20% = 200 students