Murali and Sai can complete a job in 20 days and 30 days respectively. Two days after they start the job, Murali leaves and Sai completes the remining job. In how many days can Sai complete the remaining job ?

Options

A. 20
B. 25
C. 15
D. 18

Answer

B

Explanation

Part of the job completed by Murali and Sai in 2 days `=2((1)/(20)+(1)/(30))=(1)/(6)`
Remaining part`=(5)/(6)`
Time taken by Sai to complete the remaining part `=(5)/(6)(30)=25` days.