Mathematics, 21.09.2021 01:00 raweber
If 20 man or 30 boys can do a piece of work in 36 days, in how many days will 10 men and 12 boys do it? a. 15 C: 30 b. 20 d. 40
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If 20 man or 30 boys can do a piece of work in 36 days, in how many days will 10 men and 12 boys do...
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