Question

There are 53 students on the school basketball team. the number of 8th graders is 15 fewer than 3 times the number of 7th graders. how many 7th graders are there?

Answer 1

17 7th graders

Explanation:

grd 8 is x, grd 7 is y

x+y=53

x=3y-15

use substitution: (3y-15)+y=53

4y-15=53

4y=68

y=17