A machine shop produces metal brackets on two different machines. Machine 1 can produce a bracket every 10 minutes. Machine 2 can produce a bracket every 4 minutes. What is the average productivity per machine?
A) 4.3 brackets/hour
B) 8.6 brackets/hour
C) 10.5 brackets/hour
D) 21.0 brackets/hour
E) 7.0 brackets/hour

Question

Quizplus · Accepted Answer

Machine 1 > 6 [6x10=1 hr]
Machine 2 > 15[4x15=1 hr]
6 + 15 = 21
= 21 / 2
= 10.5 brackets/hr

A Machine Shop Produces Metal Brackets on Two Different Machines