Challenger App

No.1 PSC Learning App

1M+ Downloads
8 men and 12 women finish a job in 4 days. While 6 men and 14 women in 5 days. In how many days will 20 women finish the job?

A10

B20

C30

D15

Answer:

B. 20

Read Explanation:

M1 × D1 = M2 × D2 (8M + 12W) × 4 = (6M + 14W) × 5 32M + 48W = 30M + 70W 2M = 22W M : W = 11 : 1 total work done is = [ (8 × 11) + (12 × 1) ] × 4 = [ 88 + 12 ] × 4 = 400 20 women do this work in 400/20 days = 20 days


Related Questions:

E and F can do a work in 10 days. If E alone can do it in 30 days, F alone can do it in _____ days.
A bicycle is sold at a profit of 10%. Had it been sold for 900 less, there would have been a loss of 10%. The cost price of the bicycle is:
The efficiency of A and B to do a work is in the ratio 3 ∶ 5. Working together they can complete a work in 30 days. In how many days A alone will complete that work?
Ravi, Manish and Naveen alone can complete a work in 30 days, 15 days and 10 days respectively. They start the work together but Ravi leaves the work after 2 days of the starting of the work and Manish leaves the work after 3 days more. In how many days Naveen will complete the remaining work?
Two inlet pipes A and B can fill a cistern in 30 minutes and 36 minutes, respectively. Initially, only A is opened for 10 minutes. After 10 minutes, A is closed and B is opened. In how much time (in minutes) will the inlet pipe B fill the remaining part of the cistern?