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Math

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A pear contains 30 calories more than an apple. Ten apples have as many calories as seven pears. Find the number of calories in an apple and in a pear.

  • Math -

    x = cal in an apple
    x + 30 = cal in a pear

    10x = 7(x + 30)
    10x = 7x + 210
    3x = 210
    x = 70

    70 cal = apple
    100 cal = pear

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