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X, Y, Z start at the same time in the same direction to run around a circular stadium. X completes a round in 63 seconds, Y in 105 seconds and Z in 210 seconds. If they start at the same time, then at what time will they meet again at the starting point?

Option 1)

$9 \: min \: 9 \: seconds$

Option 2)

$10 \: min\: 30\: seconds$

Option 3)

$10\: min \: 6 \: seconds$

Option 4)

$8 \: min \: 4 \: seconds$

Option 5)

-

Answers (1)

best_answer

X = 63

Y = 105

Z = 210

LCM of X,Y & Z = 630 Seconds or 10 min & 30 seconds

Posted by

rishi.raj

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