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22 July, 15:53

A collector has 120 movie posters and 100 band posters. She wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120:100. If she sells 24 movie posters, how many band posters should she sell? Explain?

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  1. 22 July, 18:05
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    The ratio is 120:100.

    If we simplify we get 6:5

    If she sells 24, she needs to sell 24/6 x 5 to keep the ratio the same.

    24/6 = 4

    4 x 5 = 20

    20 band posters must be sold.
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