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2 December, 19:08

In a survey, a group of students were asked their favorite sport. Eighteen students chose "other" sports. Then how many students participated?

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  1. 2 December, 19:19
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    18 students are 100%-37,5%-40%=22,5%

    So we know that 18 students equal to 22.5. And we are looking for the anwser what 100% of students is.

    SO:

    x students - 100%

    (22 + 1/2) x = 18*100

    (22 + 1/2) can be represented as just 25.5

    - / / - = 1800

    we need to divide bot sides by 25.5

    x = 1800 / 25.5

    ... x = 80
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