1 All Year 9 students in a school must choose either Music or Drama but not both. In 2013 the numbers taking the options of Music or D

Question

1 All Year 9 students in a school must choose either Music or Drama but not both.
In 2013 the numbers taking the options of Music or Drama were in the ratio, 3:7.
The number of students choosing Music was 72.
a) What percentage of these students chose Music?
b) How many students were there in total in Year 9?

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Thu Thủy 3 years 2021-08-30T23:00:58+00:00 1 Answers 7 views 0

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  1. kimchi2
    0
    2021-08-30T23:02:10+00:00
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    Answer:

    let it be 3x and 7x

    a… 3x=72—for music

    x=14

    then dance=7*14=92

    total….72+92=164…..(b)

    a/////72/164*100=45%

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