Question

If a crew of loggers cleared 1 acre of lumber in 4 days, how long will it take the same crew to clear 5 acres of lumber?

Answer 1

If they cleared 1 acre of lumber in 4 days, then they cleared 1/4 acre of lumber each day.
Therefore, it will take the same crew 5 acres / (1/4 acre/day) = 20 days to clear 5 acres of lumber. Answer: \boxed{20}.