SSC CGL 31 Aug 2016 Paper

Question : 51 of 100

Marks: +1, -0

A and B together can do a piece of work in 9 days. If A does thrice the work of B in a given time, the time A alone will take to finish the work is

Solution:

Let time taken by A be x days.
∴ Time taken by B = 3x days
According to the question,

1/x+1/{3x}

1/9

⇒

{3+1}/{3x}

1/9

⇒ 3x = 4 × 9
⇒ x =

{4×9}/3

= 12 days

Go to Question:

Prev Question

Next Question