Question

Item 18 A sixth grader weighs 90 pounds, which is 120% of what he weighed in fourth grade. How much did he weigh in fourth grade?

Answer 1

he weighed 75 lbs in 4th grade

Explanation:

f= what he weighed in 4th grade

90 = 120% * fourth grade weight

90 = 1.20 * f

divide each side by 1.2

90/1.2 = 1.2 f/1.2

75 = f

he weighed 75 lbs in 4th grade