It takes 3 men to paint a block of flats completely in 22 day . Each man takes an equal number of days to paint a block of flat . How many days will it take 2 men to paint 3 similar blocks of flats completely?
3(22)= 66 man-days to finish 1 block
For 3 identical blocks 3(66) = 198 man-days are needed so for 2 men working (198/2)=99 days are needed.
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