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    Question

    Tea worth Rs. 80/kg and Rs. 100/kg are mixed with a third

    variety in the ratio 5:3:2 respectively. If the final mixture is worth Rs. 92/kg, then the price of the third variety of tea is:
    A Rs. 105/kg Correct Answer Incorrect Answer
    B Rs. 110/kg Correct Answer Incorrect Answer
    C Rs. 115/kg Correct Answer Incorrect Answer
    D Rs. 100/kg Correct Answer Incorrect Answer

    Solution

    Let the quantity of three varieties of tea in the new mixture be β€˜5x’ kg, β€˜3x’ kg, and β€˜2x’ kg respectively
    Let the price of the third variety of tea be Rs. β€˜y’/kg
    ATQ:
    (80 Γ— 5x) + (100 Γ— 3x) + (y Γ— 2x) = 92 Γ— (5x + 3x + 2x)
    Or, 400x + 300x + 2xy = 92 Γ— 10x
    Or, 700x + 2xy = 920x
    Or, 2xy = 220x
    Or, y = 110
    So, the price of the third variety of tea = Rs. 110/kg

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