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Molodets [167]
3 years ago
13

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

Mathematics
1 answer:
Pani-rosa [81]3 years ago
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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Step-by-step explanation:

Hopefully this helps ik it was confusing to me too in pre-algebra when i was in 8th grade

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