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saurabh kaushal

· started a discussion

· 1 Months ago

err (Question: 275773.0 )

toprankers shame on you

Question:

A father can do a certain job in X hours. His son takes twice as long to do the job. Working together they can do job in 6 hours. How many hour does the father takes to do the job?

Options:
A)

9

B)

18

C)

12

D)

20

Solution:

Ans: (a)

Let father is A and son is B.

Than     A + B  →     6 days

Ratio of A and B = x : 2x

   Total work = 3x X 6 =18x

Then, father do in (18x/2x) = 9days.

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