2 years ago

Erica could do 10 math problems in 20 minutes. Penny could do 15 math problems in 25 minutes. If they worked

1 answer:

8 0

It’ll take erica 60 minutes (an hour) to do 30 math problems and it’ll take penny 50 minutes to do 30. but together, it should take about 45-55 minutes to do 30

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