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Posted by on Wednesday, October 7, 2009 at 11:59pm.

my P.E. teacher asked the 100 seventh graders in my school if they could swim. Half of the boys and two thirds of the girls said yes. Seventeen boys said no. How many seventh graders know how to swim?

  • math - , Thursday, October 8, 2009 at 12:12am

    17(2) = 34 amount of boys
    100 - 17(2)= 66 amount of girls

    1/2 * 34 = 17 boys said yes

    2/3 * 66 = 44 girls said yes

    44 + 17 = 61 people in total know how to swim

    your answer is 61

  • math - , Sunday, October 6, 2013 at 7:02pm

    61

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