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In Ms. Perron's class, 75% of the students are boys. There are 18 boys in the class. What is the total number of
students in Ms. Perron's class?
Gonzales
A6
B) 14
C24
D 57

Answer 1

Answer
The formula for this question is:
Number of the students of boys in percent times number of the student of girls over 100% equals to the number of boys in class so:X is the number of girls in percent
75%X=18 Before we criss-cross we simplify
—— We can simplify 75 & 100 by 25
100% And also we cancel % by %

3X=18 Now we criss-cross
—
4
3X=18x4
3X=72 Now we divide both sides by 3
— —
3 3
X=24 The answer is C

Answer 2

C) 24

Explanation:

we know that 18 students is 75% of the class and we need to know 100% of the class. to calculate this, divide the 18 students by 75% to work out what 1% of the students equals:

18 ÷ 75 = 0.24

0.24 students = 1% of the class. multiply this number by 100 to calculate 100% of the class:

0.24 x 100 = 24

∴ there are 24 students in Ms. Perron's class

I hope this was helpful :-)