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A, B and C can complete a work in 10, 20 and 30 days respectively. If D can destroy the same work in 15 days. Find the time taken by all of them to complete the whole work.
5Q:
A, B and C can complete a work in 10, 20 and 30 days respectively. If D can destroy the same work in 15 days. Find the time taken by all of them to complete the whole work.
- 150/7daysfalse
- 260/7 daystrue
- 320/3 daysfalse
- 440/7 daysfalse
- 5None of thesefalse
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