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29 July, 19:03

A stackable CD rack holds 20 CDs and costs $3. Mark has a collection of 120 CDs. How much will it cost him to buy enough racks to hold all of his CDs?

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  1. 29 July, 20:09
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    You would need $18 total to buy the racks needed.

    Step-by-step explanation:

    First, every 20 CDs needs a new rack, so you would divide 120 by 20.

    120 / 20 = 6 racks

    Second, you would multiply the price ($3) of a rack by how many racks needed.

    3 * 6 = $18
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