Question

1
A can do a job in 15 minutes, B takes 20 minutes while
C takes 30 minutes to do the same job. All three begin
working together. A leaves after 2 minutes, leaving
B and C to continue working together. B leaves
4 minutes after that, leaving C to finish the job. How
much more time will take to finish the job?​

Answer 1

Answer:

C will take 26 minutes more to work