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If the average score of a class of 25 students is 75?

If 15 female students in the class average 70, then the male students in the class averaged? a.85 b. 82.5 C. 77.5 d.75.0 e. 70.0 I've been doing homework for eight hours...my brain is fried!!! Help please!

1 Answer

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  • CoachT
    Lv 7
    1 decade ago
    Favorite Answer

    move everything to the right one thing at a time: ☺

    ((15 * 70) + 10x) / 25 = 75

    1050 + 10x = 75 * 25 [1875]

    10x = 1875 - 1050 [825]

    x = 825/10

    x = 82.5

    b.

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