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A man can do a piece of work in 5 days. He and his son working together can finish it in 3 days. In how many days can the son do it alone? 1 (a) 612 days (b) 7 days (c) 712 days (d) 8 days |
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Answer» A man can do a piece of work in 5 days. He and his son working together can finish it in 3 days. In how many days can the son do it alone? 1 (a) 612 days (b) 7 days (c) 712 days (d) 8 days
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