Question

A biology class has a total of 47 students. The number of females is 15 less than the number of males How many males and how many females are in the class

Answer 1

31 m, 16 f

Explanation:

m + f = 47

m = f + 15

Substitute

(f + 15) + f = 47

2f + 15 = 47

2f = 32

f = 16

m + f = 47

m + 16 = 47

m = 31