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Thread: Inverse Proportionality: A is inversely proportional to B, and A is 5/3 when B is 8/5

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    Inverse Proportionality: A is inversely proportional to B, and A is 5/3 when B is 8/5

    Hello! Hope everyone is well. I'm having trouble with an inverse proportionality problem:

    "You know A is inversely proportional to B, and A is 5/3 when B is 8/5. What is A when B is 1/12?"

    Thank you!

  2. #2
    Elite Member
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    Quote Originally Posted by dc10195 View Post
    Hello! Hope everyone is well. I'm having trouble with an inverse proportionality problem:

    "You know A is inversely proportional to B, and A is 5/3 when B is 8/5. What is A when B is 1/12?"

    Thank you!
    A ∞ 1/B

    A = K * (1/B) ← Calculate the value of "K" from " A is 5/3 when B is 8/5"

    continue.....
    “... mathematics is only the art of saying the same thing in different words” - B. Russell

  3. #3
    Elite Member stapel's Avatar
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    Cool

    Quote Originally Posted by dc10195 View Post
    Hello! Hope everyone is well. I'm having trouble with an inverse proportionality problem:

    "You know A is inversely proportional to B, and A is 5/3 when B is 8/5. What is A when B is 1/12?"
    To learn how to set up and solve direct-, inverse-, and joint-proportionality exercises, try here. Once you have studied the lesson and learned the basic terms and techniques, please attempt the exercise, starting with the help provided in the previous reply; namely, that the variation equation will be of the form:

    . . . . .[tex]A\, =\, \dfrac{k}{B}[/tex]

    Do the plug-n-chug for k, and then do the plug-n-chug for A. If you get stuck, you can then reply with a clear listing of your steps so far. Thank you!

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