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4 November, 12:56

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?

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  1. 4 November, 13:13
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    he weighed 75 lbs in 4th grade

    Step-by-step 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
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