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Answer : 3 123 Explanation : Answer: C) 123 Explanation: We know that, M1 × D1W1 = M2 × D2W2Here M1 = 1, D1 = 6 min, W1 = 1 and M2 = M, D2 = 90 min, W2 = 1845 1 × 61 = M × 901845 =