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02-02-2015
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Two co-teachers, Daniel and Mathew, have to grade a set of math journals. Daniel grades 45% of the journals. Mathew has to grade 121 journals.

How many journals are there in all?

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02-02-2015

121 = 55%
121 / 55 = 2.2
1% = 2.2
2.2 x 100 = 220

220 journals in all

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