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    Question

    If 40% of 'M' is 60 less than 30% of 'N', then determine

    250% of 'N', given that (M + N) = 900
    A 1500 Correct Answer Incorrect Answer
    B 1060 Correct Answer Incorrect Answer
    C 1800 Correct Answer Incorrect Answer
    D 1020 Correct Answer Incorrect Answer

    Solution

    ATQ, 0.4M + 60 = 0.3N Or, 60 = 0.3N - 0.4M ........ (I) Also, M + N = 900 Or, M = 900 - N ...... (II) Using equation (I) and (II), we have; 60 = 0.3N - 0.4(900 - N) Or, 60 = 0.3N - 360 + 0.4N Or, 420 = 0.7N So, N = 600 So, required value = 600 × 2.5 = 1500

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