tom and Dan are riding in circular path. Tom completes a round in 9 minutes.Dan completes a round in 12 minutes. if they both started in the same place and time and go to the same direction, after how many minutes will they meet again at starting point?
A. after 34 minutes
B. after 36 minutes
C. after 38 minutes
D. after 40 minutes
A. after 34 minutes
B. after 36 minutes
C. after 38 minutes
D. after 40 minutes
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Answer:
B. after 36 minutes
Explanation:
It's Least Common Multiple.
Multiples of 9: 9, 18, 27, 36
Multiples of 12: 12, 24, 36
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