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