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    Question

    Determine the value of a тИТ b given that a + 3b = 18a

    and 3a + b = 30 .
    A 8 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 3 Correct Answer Incorrect Answer

    Solution

    Given: a + 3b = 18 ..... (I) And 3a + b = 30 ....... (II) On subtracting equation (I) from equation (II) , we have; 2a - 2b = 12 So, a - b = 6 Hence, option b.

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