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18 September, 11:11

Three out of four students in a school said they would vote for nuncio for class president. Predict how many of the 340 students would vote for nuncio

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  1. 18 September, 14:59
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    3/4 = x / 340 ... 3 to 4 students = x to 340 students

    cross multiply

    (4) (x) = (3) (340)

    4x = 1020

    x = 1020/4

    x = 255 <==

    or this way ...

    3 out of 4 students ... 3/4 = 75%

    so 75% of 340 = 0.75 (340) = 255 <=
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