Question

There are 12 boys in a class. If the boys make up 4/5 of the entire class, how many students are in the class?

Answer 1

Answer:

15 students

Step-by-step explanation:

Let x = number of students in the class

students * fraction of boys = boys

x * 4/5 = 12

Multiply each side by 5/4

x * 4/5 (5/4) = 12*5/4

x =15

There are 15 students

Answer 2

Answer:

15 students

Step-by-step explanation:

Step 1: Divide 12 by 4 because if 12 is 4/5, then to find 1/5 you have to divide 4/5 by 4 and 12 by 4

12/4=3

Step 2: Add 12+3 because 4/5+1/5=5/5

12+3=15

There are 15 students in the class, hope this helps!