A and B together can complete a task in 20 days B and C together can complete the same task in 30 da...........

Quant (SSC) Time and work

A and B together can complete a task in 20 days. B and C together can complete the same task in 30 days. A and C together can complete the same task in 40 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?

2 :5

2 : 7

3 : 7

1 : 5

छोटे Courses बड़े Results

Master Time and work

Prepare through Micro-courses

Try Now

Explanation:

If A and B can do a piece of work in x days, B and C in y days, C and A in z days, then 'C' working alone will do the same work in
[2 xyz /xy + zx - yz]
A and B together finish a piece work = x = 20 days
B and C together finish a piece work = y = 30 days
C and A together finish a piece work = z = 40 days
By the short trick approach: C can do the work in