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Math Help - Help please.

  1. #1
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    Help please.

    A stack of thirty cards is placed next to a ruler, and the height of stack is measured to be inches.

    How thick is one card?

    _________ inches
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  2. #2
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    Re: Help please.

    All you would do is divide 3/4 inches by 30 which gives you 0.635 mm. And in inches 1 card would be : 0.025000000000027 inches
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  3. #3
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    Re: Help please.

    Quote Originally Posted by jeremyjezzanba View Post
    All you would do is divide 3/4 inches by 30 which gives you 0.635 mm. And in inches 1 card would be : 0.025000000000027 inches

    As a fraction.
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  4. #4
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    Re: Help please.

    okay so 0.025 over 1 , times both by 100, 2.5 over 100. I guess simplify it to the amount you want. if you want a whole number then 5 over 200. I would think the answer would be : 1 over 20
    Last edited by jeremyjezzanba; October 1st 2012 at 09:18 PM.
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  5. #5
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    Re: Help please.

    You need to divide 3/4 inches by 30 cards.

    Using the reciprocal rule,

    (3/4)/30 = (3/4)*(1/30)

    Multiplying fractions,
    (3/4)*(1/30) = 3/120 = 1/40 inches.
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