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29 April, 15:47

A camera and case together cost 110. if the camera cost 100 more than the case, how much does the case cost?

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  1. 29 April, 17:26
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    X=cost of camera

    y=cost of case

    x+y=110

    camera is 100 more than case

    x=100+y

    subsitute 100+y for x

    100+y+y=110

    100+2y=110

    minus 100 both sides

    2y=10

    divide both sides by 2

    y=5

    sub back

    x=100+y

    x=100+5

    x=105

    the camera costs $105

    the case costs $5
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