Seudónimo Seudónimo

01-11-2016
Mathematics

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Marty spent 2 7/10 hours studying for a test. Kim spent 3 1/4 hours studying for the same test. How much longer did Kim study than Marty?

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Аноним Аноним

01-11-2016

you have to turn 3 1/4 into 3 5/20 and 2 7/10 into 2 14/20 then regroup the 3 and you get 2 25/20 and subtract that from 2 14/20 and you get 11/20

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