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Bill can mow the lawn in 2 hours, and his younger brother Tom can mow it in 3 hours. If both brothers mow the lawn together, how many hours will it take them?
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Bill can mow the lawn in 2 hours, and his younger brother Tom can mow it in 3 hours. If both brothers mow the lawn together, how many hours will it take them?

User Drizzd
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2 Answers

6 votes

Answer

1 hour 12 minutes

(the simplified version of the answer above)


User Oujesky
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8.4k points
2 votes
We have a work problem right here. We can use knowledge on ration and proportion to answer this type of problem. We do as follows:


1 job / 2 hours + 1 job / 3 hours = 1 job / time it takes for both when working together

time it takes for both when working together = 1.2 hours
User Gabriel Amram
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8.3k points
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