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Math Help - Please confirm these for me part 2

  1. #1
    Newbie rodgers's Avatar
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    Please confirm these for me part 2

    If a pair of shoes is now worth $180 because they were reduced by 20%

    The original price is $225 ?
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  2. #2
    MHF Contributor
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    You do not quite have the spirit of the task.

    You must prove it, not guess at it.

    How do you arrive at 225?
    Wy do you doubt?
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  3. #3
    Junior Member SuperCalculus's Avatar
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    As $180 is 80% of the original price, it's represented by this;

    0.8x = 180

    Hence,

    \frac{180}{0.8} = x = 225

    All in dollars, of course.
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  4. #4
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    I guess we'll just never know if the student has a clue. Alas...
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  5. #5
    Junior Member SuperCalculus's Avatar
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    Quote Originally Posted by TKHunny View Post
    I guess we'll just never know if the student has a clue. Alas...
    My apologies, I didn't see your post before I had already posted =/
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  6. #6
    Newbie rodgers's Avatar
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    I have workings but they are hand written

    I was just checking if the answer was right or not, then I could post the workings if I had to
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  7. #7
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    Quote Originally Posted by SuperCalculus View Post
    My apologies, I didn't see your post before I had already posted =/
    But you still did the work for him? It is better even then to give hints and lead them to their own conclusions. Thus they learn.
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  8. #8
    Newbie rodgers's Avatar
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    But I already had workings I was just checking my answer

    (and i am not a him)
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  9. #9
    Junior Member SuperCalculus's Avatar
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    Quote Originally Posted by Diagonal View Post
    But you still did the work for him? It is better even then to give hints and lead them to their own conclusions. Thus they learn.
    I didn't do it for him, since he'd already got the correct answer, I just explained my reasoning. If he'd got it wrong, I wouldn't have done so much. And at any rate, it's unfair to assume all people learn that way. For instance, I would learn it better simply by looking at what I posted, observing the method applied, and applying it to all future calculations of the same type. Thus, I learn. *Shrugs* To each their own I guess.
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  10. #10
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    Quote Originally Posted by rodgers View Post
    But I already had workings I was just checking my answer

    (and i am not a him)
    In future, please post your workings when asking for an answer to be checked. Thankyou.

    Thread closed.
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