Please help me.! A grading machine can grade 48 multiple-choice tests in 1 minute. How long will it take the machine to grade 300 tests? (please show all work thank you!)

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asked Jan 10, 2015 61.3k views

1 Answer

Jgleeson · Answer 1 · 2015-01-14T10:59:45+0000

You set up a proportion. You would do 1 is to 48 as x is to 300 then u cross multiply and get 48x=300and then do 300/48 and thats 6.25 minutes