A) 21

B) 37

C) 50

D) 73

**Answer:** C) 50

**Solution:**

The Ratio of boys to girls is 7:3

Number of boys = 7x

Number of girls = 3x

Total number of students = 7x+3x=10x

So the possible value multiplied by 10 is 50.

A) 21

B) 37

C) 50

D) 73

**Answer:** C) 50

**Solution:**

The Ratio of boys to girls is 7:3

Number of boys = 7x

Number of girls = 3x

Total number of students = 7x+3x=10x

So the possible value multiplied by 10 is 50.