An 8 person paint crew finishes a job in 5 days. At the same pace, how many days would a 4 person crew need for the same job?

Correct answer to question 161 (Arithmetic Reasoning): 10 days

Method

Fewer workers means more days, so this is inverse proportion. The job takes 8 x 5 = 40 worker-days total, and 40 divided by 4 workers gives 10 days.