Question 498927
If 2 boys can build 6 sandcastles in 3 and 1/3 hours, how long will it take for 3 boys to build 11 sandcastles?
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2 boys * 3 1/3 hrs = 20/3 boy-hrs to build 6
--> 10/9 boy-hrs per castle
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11 castles --> 110/9 boy-hrs
(110/9) boy-hrs/3 boys = 110/27 hours
=~ 4.074 hours