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  1. #1
    Join Date
    Oct 2007
    Location
    VENTURA, California, USA
    Posts
    3,637

    Default 20:1 RATIO eXPLAINED

    Here's a little math for Saturday:

    20:1 Ratio Explained.
    http://www.answerbag.com/q_view/127800
    I wasn't satisfied with any answer. I checked some math sites and wikipedia. Here is my claim.

    From wikipedia.org upon searching "ratio":

    "If a school has a 20:1 student-teacher ratio, there are twenty times as many students as teachers."

    Okay, so 20:1 means "20 to 1" or "20 for every 1." So if you take a group of 21 people from that school, there will be 20 students plus 1 teacher.

    Now if it said "1 in 20 people at the school are teachers," then in that group of twenty there is 1 teacher. (1 IN 20) So in that case, 19 in that 20 are students and 1 in that 20 is a teacher. Now that we've said "1 in 20" there are only 19 times as many students as teachers.

    Therefore, a ratio of 1:20 means "1 for every 20" and NOT "1 in 20." The problem is the "IN", which everyone here has claimed is acceptable when using to word ratios.

    Comments,
    Ernie
    Ernie
    My websitehttp://bees4u.com/

  2. #2
    Join Date
    May 2008
    Location
    Ballina, NSW - Australia
    Posts
    232

    Default Re: 20:1 RATIO eXPLAINED

    20:1 = 20 to 1

    20 litres fuel : 1 litre oil

    21 litres of premix is made total.

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