Question

A,B and C can finish a job in 2 hours. if A alone can finish the job in 5 hours, B alone can finish the job in 6 hours, how long will it take for C to finish the job alone?

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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Together can do it in 2hrs, consider c can do the work in x hrs,now in 1hr A can do it in 1/6th part, B can do 1/5th part in 1hr, C can do 1/x part in 1hr, all together can do 1/2part in 1hr so 1/6+1/5+1/x = 1/2 by solving this equation you get x=7.5hrs so c takes 7.5 hrs to complete

Step-by-step explanation:

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