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29 September, 05:05

In an orchestra the ratio of trombones to violas is 1: 3. There are 9 violas. Write a proportion that gives the number t of trombones in the orchestra.

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  1. 29 September, 08:58
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    1 : 3

    Trombones : violas

    t : 9

    t = 1/3v

    t = 1/3 x 9

    t = 3

    3 : 9

    3 trombones : 9 violas
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