If it takes 8 days for 3 builders to build a cottage. How long will it take 6 builders to build the same size cottage working at the same rate?
It would take one builder 8 x 3 = <<8*3=24>>24 days to build the cottage on his own.
6 builders can build the house in 24 / 6 = <<24/6=4>>4 days.
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