Mathematics
Medium
Question
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every Third day ?
A
12 days
B
15 days
C
16 days
✓ Official correct answer
D
18 days
Community credibility
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A
12 days
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B
15 days
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C
16 days
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D
18 days
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