A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that

Question Asked by a Student from EXXAMM.com Team

Q 1412391239.     A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
A

1/4

B

1/10

C

7/15

D

8/15

E

4

HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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