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16 votes
A grading machine can grade 48 tests in I minute. How long will it take the machine to grade 300 tests?

A grading machine can grade 48 tests in I minute. How long will it take the machine-example-1
User Motti Shaked
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2.9k points

2 Answers

29 votes
29 votes
answer: 6.25 minutes

explanation: 300/48
User ShtihlFD
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3.2k points
22 votes
22 votes

start by writing the ratio


\frac{48\text{ tests}}{1\text{ minute}}

now do the multiplication


300\text{ tests}\cdot\frac{1\text{ minute}}{48\text{ tests}}=6.25\text{ minutes}

the machine will take about 6.25 minutes to grade the 300 tests.

User Uthistran Selvaraj
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3.0k points