Join ExamsbookAnswer : 4. "46 minutes 12 seconds"
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?5
Q: 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?
- 136 minutes 22 secondsfalse
- 246 minutes 22 secondsfalse
- 336 minutes 12 secondsfalse
- 446 minutes 12 secondstrue
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Answer : 4. "46 minutes 12 seconds"
Explanation :
Taking L.C.M of 252 sec, 308 sec,198 sec=2772 sec=46 minute 12 sec