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2 April, 09:19

Paul bought a soft and a sandwich for $9.90. What equation may be used to find the price of each item if the sandwhich cost 3.5 times as much as the soft drink

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Answers (2)
  1. 2 April, 09:27
    0
    Sandwich costs $7.70 and the soda costs $2.20

    Step-by-step explanation:

    First create a ratio:

    The sandwich cost 3.5 more than the drink therefore the ratio is 3.5:1

    Then add the two sides of the ratio together to get the total parts of the ratio

    3.5+1 = 4.5

    Now that we know the total parts of the ratio we can solve for one part by dividing the total cost $9.90 by the total parts of the ratio 4.5+

    $9.90/4.5 = 2.20

    Since we know that each part of the ratio is 2.20 we multiply both sides of the ratio by 2.20

    3.5 * 2.20 = 7.70

    1 * 2.20 = 2.20
  2. 2 April, 10:57
    0
    The equation is 3.5x+x=9.9

    The soft drink costs 2.2 and the sandwhich costs 7.7
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