1. Jennifer can mow the lawn in 20 min. Kristen can mow the lawn in 30 min. If they work together, how long will it take them to

Question

2 years ago

7

mow the lawn

1 answer:

vladimir1956 [14] · Answer 1 · 2023-07-06T03:51:31+03:00

Answer:

Sam can do the job in 20 min. So he can do the whole job at the rate of 1 job in 20 minutes.

So he does 1/20 of the job per minute.

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Rob can do the job in 30 min. His rate is 1/30 of the job per minute.

.

Working together how does it take?

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1/20*x + 1/30*x = 1 job done

, where x = minutes.

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Step-by-step explanation: