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Quantitative Aptitude

Successive Division

Three friends...

Question

Three friends J,K and L jog around a circular stadium and complete one round in 12, 18 and 20 seconds respectively. In how many minutes will all the three meet again at the starting point?

A

5

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B

8

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C

12

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D

3

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E

None of these

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Solution

The correct option is D 3
J, K and L will meet again at the starting point after -
LCM of 12, 18 & 20 = 180 seconds = 3 mins

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