In a fourth grade class, five-sevenths of the students are girls. If there are

20

girls, what is the total number of students in the class?

Answer: 28

Step-by-step explanation:

Five seventh is written as 5/7.

Let the total number of students in the class be represented as N.

Therefore;

5/7 * N = 20 (This is an expression for the number of girls in the class)

Simplifying for N gives us the total number of students in the class.

5/7 * N = 20

Cross multiply

5*N = 7*20

5N = 140

N = 140 / 5

N = 28

Total number of students equals to 28

28

Well I think u would do 20 divided by 5 is 4. So 1/7 is 4. Then u would do 4x7 which is 28 to get to 7/7. Hopefully that makes sense.

20 divided by 5 = 4. 4 x 7=28