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Math Help - Modelling and problem solving

  1. #1
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    Modelling and problem solving

    The correct conversion formula for degrees C to degrees F is F = 9/5C + 32. An approx formula is F = 2C + 30. At what temperature do both the C and F scales give the same value?
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  2. #2
    Super Member ILikeSerena's Avatar
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    Re: Modelling and problem solving

    Quote Originally Posted by elmidge View Post
    The correct conversion formula for degrees C to degrees F is F = 9/5C + 32. An approx formula is F = 2C + 30. At what temperature do both the C and F scales give the same value?
    Hi elmidge!

    Suppose the C and F scales both give the same unknown value x.
    Then x = 9/5x + 32.
    Can you solve that?
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