layla07
30.06.2019 •
Mathematics
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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Ответ:
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
Ответ: