Mathematics, 17.04.2021 01:30 julionavedo21
A machine can grade 30 tests in 2 minutes. At this rate, how long will it take the machine to grade 135 tests?
8 minutes
9 minutes
10 minutes
12 minutes
Answers: 2
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A machine can grade 30 tests in 2 minutes. At this rate, how long will it take the machine to grade...
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