Question

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

75lbs

Explanation:

Let x be the weight in fourth grade.
`120%*x = 90`
`120/100 = 1.2`
`1.2 x = 9 0`
`x = 90/1.2`
x = 75 lbs