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5 September, 13:42

Is 6cups of coffee for $8 and 9 cups of coffee for $12 proportional

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Answers (2)
  1. 5 September, 13:49
    0
    They are proportional

    Step-by-step explanation:

    Let's simplify the ratio of coffee to cost:

    6:8 : : 3:4

    9:12 : : 3:4

    Both simplify to 3:4, so they are proportional
  2. 5 September, 13:58
    0
    Yes, proportional

    Step-by-step explanation:

    Price 'P' in dollars

    No. of cups 'C'

    P = kC

    8 = 6k

    k = 8/6

    k = 4/3

    12 = 9k

    k = 12/9

    k = 4/3

    Same constant, so proportional
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