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Casper bought some pencils at $.50 each. He had $3 left after the purchase. If he wanted to buy the same number of note pads at $.80 each, he would be short $1.50. Write a linear equation for the number of pencils he purchased. Then solve it.

  • Math -

    .50p+3 = .80p-1.50
    .3p = 4.50
    p = 15

    so, 15 pencils cost $7.50, meaning he started out with $10.50
    15 notepads cost $12.00, so he'd be $1.50 short.

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