Solve the problem.
-Two machines are turned on at 8:00 A.M. If one can produce 36 items each hour and the other can produce 33 items each hour, at what time will they produce a total of 138 items?
A) 9:00 A.M.
B) 11:30 A.M.
C) 11:00 A.M.
D) 10:00 A.M.

Question

Quizplus · Accepted Answer

The two machines produce a total of 36 + 33 = 69 items per hour together. To produce 138 items, it will take 138 / 69 = 2 hours. Starting from 8:00 A.M., two hours later is 10:00 A.M.

Solve the Problem. -Two Machines Are Turned on at 8:00 A.M. If One