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Math Help - Ratio question confusing.

  1. #1
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    Ratio question confusing.

    OK so I got this question which I can't do.

    It's from a GCSE Maths book.

    Danny and Melissa work in a cafe, Danny works 5 days a week but Melissa works 2 days a week. To be fair they agree to share their tips in the ratio of the numbers of days of they work.

    A: In what ratio do they share their tips
    B: What fraction of tips should Danny receive?
    C: If the tips in one week came to 66.50 how much did Melissa receive
    D: The following weeks the tips came to 84 How much did Danny receive
    E: One week Danny received 25 in tips how much did Melissa receive.

    OK I know the answer to A is 7 and answer to B is 5/7 but I do not know the rest. I don't know the method to work them out

    Hope someone can help.

    Thanks
    Last edited by mr fantastic; November 13th 2011 at 01:52 PM. Reason: Deleted frown from title.
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  2. #2
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    Re: Ratio question confusing :(

    your answer to A should be a ratio. the answer is "5:2".

    Your answer to B is correct.

    for part (c), what fraction of the tips does melissa get? multiply this by the total tip amount to get the size of her share.

    part (d) is a similar method to part (c).

    part (e): the ratio is "5:2". you can multiply both sides of the ratio by any number, so this is the same as "2.5:1" which is the same as "25:10". now can you answer?
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  3. #3
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    Re: Ratio question confusing :(

    Quote Originally Posted by SpringFan25 View Post
    your answer to A should be a ratio. the answer is "5:2".

    Your answer to B is correct.

    for part (c), what fraction of the tips does melissa get? multiply this by the total tip amount to get the size of her share.

    part (d) is a similar method to part (c).

    part (e): the ratio is "5:2". you can multiply both sides of the ratio by any number, so this is the same as "2.5:1" which is the same as "25:10". now can you answer?
    I still don't understand part C what numbers I multiply by?
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  4. #4
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    Re: Ratio question confusing :(

    if melissa gets \frac{2}{7} of the total then she gets \frac{2}{7} \times 66.50

    PS: You will often find that "of" means "times" in maths problems.

    Edit: corrected an error
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  5. #5
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    Re: Ratio question confusing :(

    Quote Originally Posted by SpringFan25 View Post
    if melissa gets \frac{2}{7} of the total then she gets \frac{2}{7} \times 66.50

    PS: You will often find that "of" means "times" in maths problems.

    Edit: corrected an error
    ah ok got it, thanks its 19
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