A unit has ordered 22 gifts in Yichang, which costs a total of 1,400 yuan. There are three types of gifts. Their unit price is 80 yuan .50 yuan .30 yuan. So possible

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Different ordering plans are
a 1 B 2 C 3 D 4

5 thoughts on “A unit has ordered 22 gifts in Yichang, which costs a total of 1,400 yuan. There are three types of gifts. Their unit price is 80 yuan .50 yuan .30 yuan. So possible”

  1. Bessie

    Two
    The number of products: set A, B, and C. 50Y 30Z = 1400
    The two formulas are brief to
    8x 8Y 8Z = 176
    8x 5Y 3Z = 140
    above -the lower formula is
    3Y 5Z = 36
    The movement of items
    5z = 3 (12-y) = 3u (u = 12-y)
    A few
    obviously existing two 15,30
    substitution
    x, y, z = 12,7,3
    or x, z = 14,2,6
    It children can learn well in the future to be as smart as the elder brother haha

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