SOLUTION: Bill can mow the lawn in 2 hours,and his brother tom can mow it in 3hours.If both brothers mow the lawn together, how many hours will it take them?
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Question 563178: Bill can mow the lawn in 2 hours,and his brother tom can mow it in 3hours.If both brothers mow the lawn together, how many hours will it take them? Answer by solver91311(24713) (Show Source):
If A can do a job in x time periods, then A can do of the job in 1 time period. Likewise, if B can do the same job in y time periods, then B can do of the job in 1 time period.
So, working together, they can do
of the job in 1 time period.
Therefore, they can do the whole job in:
time periods.
John
My calculator said it, I believe it, that settles it
