Pinki, Chinki and Reema started a work and Reema left after 4 days when 46% of the work is completed and then work got completed in 9 more days. In how many days can Reema alone complete the work?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. .
Combined work in 4 days = 46%
So (P + C + R) daily = 46 ÷ 4 = 11.5% per day
Remaining 54% done by P + C in 9 days
(P + C) daily = 54 ÷ 9 = 6% per day
R daily = 11.5 − 6 = 5.5% per day
Time for R alone = 100 ÷ 5.5 = 200/11 = 18days