It costs a ski resort $15/hour to hire one front-loader operator. If the ski resort plans to hire four front-loader operators each digging at a rate of 1 cubic yard of dirt per 20
seconds to dig 8920 cubic yards of dirt, how much in labor will it cost the ski resort?

$720

Explanation:

3 (yd³) per minute per worker.

4*3=12 yd³ per minute in total.

12*60 = 720 yd³ per hour.

8920 yd³ ÷ 720 yd³ = 12.388889 hours of work.

15$ a worker/hour x 4 workers = $60 per hour in total. Since there are only 12 whole hours in 12.388889, $60/hour x 12 full hours = $720 for all work done.

d

step-by-step explanation: