Asked by Anonymous
Ben can complete 3 math problems in 20 minutes. If he continues working at the same rate, how long will it take Ben to complete 15 math problems?
Answers
Answered by
Ms. Sue
15/3 = 5
It will take him 5 times 20 minutes to finish.
You could also set up a proportion. Cross multiply and solve for x.
3/20 = 15/x
It will take him 5 times 20 minutes to finish.
You could also set up a proportion. Cross multiply and solve for x.
3/20 = 15/x
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