The bus that travels from St. Louis to Chicago and back comes to St. Louis every 2 hours while the bus that travels from St. Louis to Springfield and back comes to St. Louis every 5 hours. If at 06:00 o'clock both bused arrived at St. Louis, at what time will they meet in St. Louis again? Choose the correct choice from the following answers
A) 16:00. B) 18:00. C) 20:00. D) 22:00. E) 24:00.
Time taken by bus to travel from St. Louis to Chicago and back comes to St. Louis = 2 hours   Time taken by bus to travel from St. Louis to Springfield and back comes to St. Louis = 5 hours   Time taken by both buses to meet again in St. Louis will be LCM of 2 and 5 = 10   If the buses start at 06:00 o'clock from St. Louis , they will meet again in St. Louis at 16:00 hours   16:00.nswer 16:00.
<result>A</result>
The bus that travels from St. Louis to Chicago and back comes to St. Louis every 2 hours while the bus that travels from St. Louis to Springfield and back comes to St. Louis every 5 hours. If at 06:00 o'clock both bused arrived at St. Louis, at what time will they meet in St. Louis again?