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22 June, 01:42

A a pencil and a ruler cost a dollar fifty together the ruler cost a dollar more than the pencil how much does a pencil cost

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  1. 22 June, 04:24
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    Use the following variables:

    P = pencil

    R = ruler

    P + R = 1.50

    R = P + 1.00

    Plug in the Equations:

    P + (P + 1.00) = 1.50

    2P + 1.00 = 1.50

    2P = 0.50

    P = 0.25

    R = 1.50 - 0.25

    So the pencil costs $0.25 and the ruler costs $1.25
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