SSC CGL 9 Aug 2015 Shift 1 Paper

Question : 109 of 200

Marks: +1, -0

A and B together can do a piece of work in 6 days. If A can alone do the work in 18 days, then the number of days required for B to finish the work is

Validate

Solution:

(A + B)’s 1 day’s work =

1/6

A’s 1 day’s work =

1/{18}

∴ B’s 1 day’s work =

1/6 - 1/{18}

{3-1}/{18}

2/{18}

1/9

∴ Required time = 9 days

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