SOLUTION: If two boys working together can complete a task in 2.5 hours and A working alone can complete that task in 10 hours, how many hours will B take in completing the task alone?

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Question 1145925: If two boys working together can complete a task in 2.5 hours and A working alone can complete that task
in 10 hours, how many hours will B take in completing the task alone?
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
BOY          RATE task per hour
A              1/10
B               B
A&B            1/2.5



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Time for boy B is .
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