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6 August, 04:32

Helen spent $7.75 to purchase 23 snacks for a club meeting. Chips are $0.25 and pretzels are $0.50. How many of each snack did Helen buy?

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  1. 6 August, 05:00
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    Helen bought 15 chips and 8 pretzels.

    Chips and pretzels = 23 snacks

    Chips = x

    pretzels = 23 - x

    chips = $0.25

    pretzels = $0.50

    $0.25x + $0.50 (23-x) = $7.75

    $0.25x + $11.50 - $0.50x = $7.75

    -$0.25x = $7.75 - $11.50

    -$0.25x = - $3.75

    -$0.25x/-$0.25 = - $3.75/-$0.25

    x = 15 * number of chips.

    number of pretzels = 23 - x = 23 - 15 = 8

    To check:

    $0.25 (15) + $0.50 (8) = $7.75

    $3.75 + $4.00 = $7.75

    $7.75 = $7.75
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