Two machines are turned on at 8:00 A.M. If one can produce 51 items each hour and the other can produce 43 items each hour, at what time will they produce a total of 188 items?
A) 9:00 A.M.
B) 11:30 A.M.
C) 10:00 A.M.
D) 11:00 A.M.

Question

Quizplus · Accepted Answer

The two machines produce a total of 51 + 43 = 94 items per hour together. To produce 188 items, they would need 188 / 94 = 2 hours. Starting from 8:00 A.M., two hours later would be 10:00 A.M.

Two Machines Are Turned on at 8:00 A