Problem Solving

[Problem Solving] 试题详情

Working at their respective constant rates, machine A makes 100 copies in 12 minutes and machine B makes 150 copies in 10 minutes. If these machines work simultaneously at their respective rates for 30 minutes, what is the total number of copies that they will produce?

Options:

250
425
675
700
750

Correct:

D

Problem Solving

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