SOLUTION: Jack can mow the yard in 4 hours. Ryan can mow it in 6 hours. how long will it take them to mow it together?

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Question 240853: Jack can mow the yard in 4 hours. Ryan can mow it in 6 hours. how long will it take them to mow it together?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(6*4)/(6+4)=24/10=2.4 HOURS TO MOW THE LAWN TOGETHER.