0_o" asked in 教育與參考考試 · 2 decades ago

數學題~英文的....急需

John's service station sells only two kinds of gasoline: regular and unleaded. Yesterday, he sold 10000L of regular and 12000L of unleaded for 4500 dollars. Today he sold 12000L of regular and 14400L of unleaded for 5000 dollars. If he charged identical prices om both daus, how much did each kind of gas cost per litre?

幫我用英文寫一下算式和過程吧~

1 Answer

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  • 2 decades ago
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    Assume price for regularis x dollars and y dollars for unleaded

    then 10000x + 12000 y =4500 (1)

    12000x + 14400y = 5000 (2)

    (1) becomes 20x + 24 y = 9 (3)

    (2) becomes 60x + 72 y = 25 (4)

    (3)X3 becomes 60x + 72y = 27 (5)

    (4) compares with (5) 25 = 27 that's impossible

    so there is no soluton to this question.

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