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Math Help - another problem..

  1. #1
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    another problem..

    hi i have another problem. Its:




    Tex's favorite recipe for barbecue sauce calls for 2 1/3 cups of tomato sauce.
    The recipe makes enough barbecue sauce to serve 7 people. How much tomato sauce is needed for 1 serving?
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  2. #2
    Senior Member nikhil's Avatar
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    Check this out

    For 7 people->2+1/3 cup of tamato sauce
    so for 1->(2+1/3)/7 cup of tamato sauce.
    NOTE:its called unitary method and it is really important to understand it.
    uhh one serving and serving one are different things.I have have assumed you meant serving one.
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  3. #3
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    That's not much of a party!

    This problem demonstrates the general uselessness of the "Mixed" fraction. What is needed, more often than not, is the unfortunately-named "Improper" fraction.

    2 1/3 cups = 7/3 cups

    \frac{7/3\;cups}{7} = 1/3\;cup

    Once we had the improper fraction, it was obvious how to proceed dividing by seven.
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  4. #4
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    wait... WHAT!!

    how can 7 be divided into 7/3???
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  5. #5
    MHF Contributor Reckoner's Avatar
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    Quote Originally Posted by abb1327 View Post
    how can 7 be divided into 7/3???
    The same way it can be divided into any other number.

    \frac{\left(\frac73\right)}7 = \frac73\cdot\frac17 = \frac13
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