Question

If there are 3 to 7 of girls and boys what is the percentage of boys if there are 50 in a class

Answer 1

15/35 or 43% if your going to the nearest whole number so there are 35 boys and 15 girls

Explanation:

Let x = the number of boys

Let 50 - x = the number of girls

Girls/Boys: 3 = 50 - x Cross Multiply

7 x

3x = 350 - 7x

10x = 350

x = 35 boys

50 - x = 15 girls

Check: 15/35 = 3/7

Answer 2

35 boys

Explanation: