Q. A can do a work in 20 days and B in 10 days. If they work on it together for 5 days, then what fraction of work is left.
A) 1/4
B) 4/9
C) 2/9
D) 1/5
✔ Correct Answer: 1/4
Exam Insight
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A) 1/4
B) 4/9
C) 2/9
D) 1/5
✔ Correct Answer: 1/4
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