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18 October, 01:04

A disk costs 3 more then a tape role bought five disks and two tapes. the total cost was 120

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  1. 18 October, 01:15
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    5 (x+3) + 2x=120

    5x+15+2x=120

    7x+15=120

    7x=105

    x=15

    Tape cost $15 disks cost $18
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