<p>If Joe can paint fences at the rate of 5 feet per hour while Jack can paint at the rate of 10 feet per hour, then how many total hours will it take Joe and Jack to paint all the fences if Joe paints all the 3-foot and 6-foot fences, and Jack paints all the 8-foot and 5-foot fences? (round your answer to the nearest hour)</p>
<p>When tackling this question do i assume they both start at the same time? Or one after the other? This question lacks clear instruction in my opinion.</p>
<p>well, if they start at the same time, Joe would finish in 10.2h and Jack in 11.9h, which mean the job would be done in approx 12h. But since the answer is 22, it means that they paint one after another (10.2 + 11.9 = 22.1). </p>
<p>I agree that the problem is misleading. They ask for TOTAL hours, but it’s really easy to miss their point. Maybe that’s why the question is on sparknotes in the first place lawl.</p>