X can do a piece of work in 15 hours. He works at it for 5 hours and t – McqOptions

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1.	X can do a piece of work in 15 hours. He works at it for 5 hours and then Y finishes the work in 5 hours. How long will they together take to complete the work?
A.	5 hrs
B.	8 hrs
C.	6 hrs
D.	9 hrs
Answer» B. 8 hrs

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