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29 January, 02:45

Tricia has a birthday party. During the party, she opened 36 gifts, which was 60% of all her gifts. After the party, she opened the rest of the gifts and found that 25% of them were the same present, so she returned all but one of the duplicate gifts. How many gifts did she return?

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  1. 29 January, 02:56
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    She returned 5 gifts.

    Step-by-step explanation:

    36 gifts is 60% = 0.6 of all the gifts that she received. How many presents are 100% = 1?

    36 gifts - 0.6

    x gifts - 1

    0.6x = 36

    x = 36/0.6

    x = 60

    She received 60 gifts.

    She opened the rest of the gifts and found that 25% of them were the same present

    The rest is 60 - 36 = 24 gifts.

    25% is (1/4) * 24 = 6 duplicate figts

    She returned all but one of the duplicate gifts.

    That is, she returned 6 - 1 = 5 gifts.
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