SOLUTION: 4 boys and 10 girls can dig a hole in 5 hours, if the boys works at 5/4th rate at which the girl works, how many boys will be needed to dig the hole in 3 hours.
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Question 1122729: 4 boys and 10 girls can dig a hole in 5 hours, if the boys works at 5/4th rate at which the girl works, how many boys will be needed to dig the hole in 3 hours.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
B, boy's rate
G, girl's rate
RT=W, rate time work
-------one girl can dig 1 hole in 75 hours.
---------one boy can dig 1 hole in 60 hours.
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How many boys will be needed to dig the hole in 3 hours?
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n boys;
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