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Mathematics, 09.12.2020 21:10 chilanka

A collector has 100 movie posters and 80 band posters. She wants to sell 30 movie posters but still have her poster collection maintain the same ratio of 100:80. If she sells 30 movie posters, how many band posters should she sell? Complete the explanation to find out how many band posters she should sell.

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A collector has 100 movie posters and 80 band posters. She wants to sell 30 movie posters but still...
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