If 6 workers complete a certain task in 12 days, how many workers are needed to finish the same task in 18 days?

1 Answer
Alan P.
Nov 1, 2016

The task requires 6 " workers" xx 12 " days" = 72 " worker-days"6 workers×12 days=72 worker-days

Spread over 18 " days"18 days, this task would require
color(white)("XXX")(cancel(72)^4 " worker"cancel("-days"))/(cancel(18)cancel("days")) = 4 " workers"

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