15 men can build a 500m long wall in 30 days. In how many days can 30 men build a 1.2 km long wall ______ ?

– by 0

A. 36 days
B. 40 days
C. 48 days
D. 24 days

directly proportional to the length of the wall and
inversely proportional to the number of men No. of days = (1200/500)*(15/30)*30 = 36 days

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