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Math Help - Help with making an equation

  1. #1
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    Help with making an equation

    Can someone show me step by step on how to make an equation with this information?

    A parking meter is designed to accept 200 twenty-cent coins.
    Write a rule which gives the number of hours parking, P hours, in terms of n, the number of twenty-cent coins inserted, when the cost of parking is 20c for
    each half hour.
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  2. #2
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    Quote Originally Posted by user_5 View Post
    Can someone show me step by step on how to make an equation with this information?

    A parking meter is designed to accept 200 twenty-cent coins.
    Write a rule which gives the number of hours parking, P hours, in terms of n, the number of twenty-cent coins inserted, when the cost of parking is 20c for
    each half hour.
    Well firstly you should restrict n so,

    n \leq 200

    now half an hour costs 20c so

    P = \frac{1}{2} \times n
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