LIC AAO Model Paper 1

Question : 37 of 160

Marks: +1, -0

A is twice as good a workman as B and together they finish a piece of work in 14 days. The number of days taken by A alone to finish the work is :

Solution:

If time taken by B be 2x days, then time taken by A = xdays.
∴

1/x+1/{2x}

1/{14}

⇒

{2+1}/{2x}

1/{14}

⇒

3/x

1/7

⇒ x = 3 × 7
= 21 days

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