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H.C.F and L.C.M Problems-Data Intensity 1 :: Discussion
| 15. | A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ? | |
| A. | 26 minutes and 18 seconds | |
| B. | 42 minutes and 36 seconds | |
| C. | 45 minutes | |
| D. | 46 minutes and 12 seconds | |
| Answer: Option D | |
| Explanation: | |
|
L.C.M. of 252, 308 and 198 = 2772. So, A, B and C will again meet at the starting point in 2772 sec. i.e., 46 min. 12 sec. |
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