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27 December, 16:21

Jack did 3/5 of all problems on his weekend homework before Sunday. On Sunday he solved 1/3 of what was left and the last 4 problems. How many problems were assigned for the weekend?

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  1. 27 December, 17:17
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    3/5 + 2/5·1/3 = 11/15

    1 - 11/15 = 4/15

    4/15 are 4 Problems

    1/15 are 1 Problem

    15/15 are 15 Problems

    15 Problems were assigned for the weekend.
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