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7 January, 13:25

The cost of a sweater vest and a blouse is $57. The sweater vest cost twice as much as the blouse. What is the price of the blouse

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  1. 7 January, 13:47
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    sweater = s, blouse = b

    s + b = 57, s = 2b

    2b + b = 57, 3b = 57, b = 19.

    s = 2b = 2 (19) = 38.

    sweater costs 38 dollars, and blouse costs 19 dollars
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