15 men can repair a wall in 8 days. How long will it take 20 men to do so, if all, work at the same rate? b) Find the mean proportional to 25 and 49.
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Step-by-step explanation:
a) 15 men - 8 days
20 men- ???
so now it is in direct proportion
now 15*8/20=6
20 men can work in 6 days
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