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Math Help - Conversions?

  1. #1
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    Conversions?

    I'm in the ninth grade and I got this assignment. I'm 99% sure my teacher has the wrong answer. So, just tell me what you would get for this problem? Thanks.

    The problem is that you have two hospitals with a certain amount of rooms and two cleaning products with different prices. I won't post the entire problem, just the converting part since that is where I apparently went wrong.

    Cleaning Product 1:

    spectrokill: 15 000$/m^3 (plus 2000$ for a machine to use it)
    covers 50m^2/L

    Cleaning Product 2:

    javel: 20$/L
    covers 40m^2/L


    What I did:

    I thought you would have to convert the spectrokill into $/L, since 1m^3= 1kL which is = to 1000 L

    I did 15 000 / 1000 to get 15$/L and then compared with the other product for each hospital.

    My teacher told me you have to find the cubic root of 1500 to get $24.66 but I don't understand why you would need to do that, since you're measuring volume and not distance.
    Last edited by mariakurtidis; May 9th 2010 at 08:44 PM.
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  2. #2
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    I did 1500 / 1000 to get 15$/L

    It should be 1.5 $/L
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  3. #3
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    ooops

    I wasn't looking at the problem. it was priced 15 000$/m^3, not 1500.
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