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प्रश्न
There is a circular path around a sports field. Sonia takes 18 minutes to drive one round of the field, while Ravi takes 12 minutes for the same. Suppose they both start at the same point and at the same time, and go in the same direction. After how many minutes will they meet again at the starting point?
योग
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उत्तर
Since they both move in the same direction and at the same time, to find the time when will they both meet together again, it is enough if we find the LCM of 12 and 18
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12 = 2 × 2 × 3
18 = 2 × 3 × 3
LCM (18, 12) = 2 × 2 × 3 × 3 = 36
Therefore, Sonia and Ravi will meet again after 36 minutes.
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