SOLUTION: jack usually mows his lawn in 4 hours, Marilyn can mow the same lawn in 3 hours, how long will it take them to mow the lawn together?
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Question 275208: jack usually mows his lawn in 4 hours, Marilyn can mow the same lawn in 3 hours, how long will it take them to mow the lawn together?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
1/4+1/3=1/x
(4+3)/12=1/x
7/12=1/x
7x=12
x=12/7=1.7143 hours working together..
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