A can do a piece of work in 14 days which B can do in 21 days. The begin together but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is……5
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Q: A can do a piece of work in 14 days which B can do in 21 days. The begin together but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is……
- 16.6false
- 28.5false
- 310.2true
- 413.5false
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