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Mathematics 18 Online
OpenStudy (anonymous):

Mr. Russell can grade a class set of 30 tests in 50 minutes. How long will it tae him to grade 111 tests? Express your answer in hours and minutes.

OpenStudy (anonymous):

(30test/50mins)=(111test/x minutes) solve for x 111 tests in 185 minutes

OpenStudy (anonymous):

3 hours and 5 minutes

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