The Racing magic takes 50 seconds to circle the racing track once. The Charging bull makes 40 rounds of the track in an hour. If they left the starting point together, how many minutes will it take for them to meet at the starting point for the second time?
Pick one:
A) 3
B) 6
C) 9
D) 12
E) 15
Time taken by Racing magic to make one circle = 50 seconds   Time taken byCharging bullto make one circle = 60 mins / 40 = 1.5 mins = 90 seconds   LCM of 90 and 50 seconds = 450 seconds   Time taken for them to meet at the starting point for the second time = 450 *2= 
<gadget id="calculator">450 *2</gadget>
<output>900</output>
900 seconds= 15 mins   Answer 15
<result>E</result>
The Racing magic takes 50 seconds to circle the racing track once. The Charging bull makes 40 rounds of the track in an hour. If they left the starting point together, how many minutes will it take for them to meet at the starting point for the second time?