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4 students can do 80 math problems in one hour. how many math problems can 8 students do in 3 hours?
Wiki User
∙ 14y ago
Ok, SO if 4 students can do 80 math problems in one hour, each student can do 20 math problems an hour. This is because 80 math problems divided by 4 students/kids is 20, well 80 divided by or / by 4 is twenty. Ok, so each student can do twenty problems an hour, and twenty multiplied by 8 (because there are now eight students doing math problems) is 160. So, that is in one hour. So, then, to, find, how much they can do in 3 hours, multiply this by 3 because 160/h multiplied by 3 is x/3r. so now 160x3 is 480, so 8 students can do 480 math problems in 3 hours.
Hope this helps!
Wiki User
∙ 14y ago
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