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mixer [17]
4 years ago
7

If 6 men can do a piece of work in 7 days, in how many men are needed to do the work in 21 days?

Mathematics
1 answer:
vova2212 [387]4 years ago
4 0
6:7
x:21 

Proportion: x/6=21/7

x/6=3
x=18

18 men are needed.
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