3 years ago

Sam can solve 30 multiplication problems in 2 mins. How many can he solve in 20 mins.

2 answers:

8 0

To find the answer using unit rates, you do 30 divided by 2 which is 15/1. Then do 15*20 which is 300. So he can do 300 problems in 20 minutes.

Citrus2011 [14]3 years ago

6 0

To get to 20 minutes from 2 minutes you multiply by 10, do the same to the 30 problems to get 300. The answer is 300 problems in 20 minutes.

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