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4 January, 17:20

A. The sum of Andre and Brandon scores on a math quiz is 180. Andres score is 2 times more than 30 less than Brandon score. Find each students quiz score.

B. Solve the inequalities.

100x-200>50x-75

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  1. 4 January, 21:10
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    A)

    a+b=180 and a=2 (b-30) using this in the first equation gives you:

    2 (b-30) + b=180

    2b-60+b=180

    3b-60=180

    3b=240

    b=80 so a=100

    Andre's score was 100 and Brandon's score was 80.

    b)

    100x-200>50x-75 subtract 50x from both sides

    50x-200>-75 add 200 to both sides

    50x>125 divide both sides by 50

    x>2.5
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