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    Question

    25% of 36% of 960 = m + 21.6, find the total of squares of

    each digit in ‘m’.
    A 116 Correct Answer Incorrect Answer
    B 100 Correct Answer Incorrect Answer
    C 72 Correct Answer Incorrect Answer
    D 66 Correct Answer Incorrect Answer

    Solution

    ATQ,

    25% of 36% of 960 = m + 21.6

    Or, (1/4) × (36/100) × 960 = m + 21.6

    Or, 86.4 = m + 21.6

    Or, m = 64.8 → Take only digits: 6, 4, 8

    Required sum = 6² + 4² + 8² = 36 + 16 + 64 = 116

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