3. A copy machine makes 60 copies per minute. A second copy machine makes 80 copies per minute. The second machine starts making copies 2 minutes after the first machine starts. Both machines stop making copies 8 minutes after the first machine started. Together, the 2 machines made how many copies?

Answer and Explanation

Your Answer is

Correct Answer is E

Explanation

The second machine played 8-2=6 minutes. The total copy volume is 60×8+80×6=480+480=960. So choose E.