Question 1184017
Boris and Michael are jogging around a lake.
 It takes Boris 6 minutes to complete a lap and 
 Michael takes 8 minutes. 
After completing each lap, the boys take a rest,
 Boris for one minute
 and Michael for two minutes.
Then they continue jogging. 
If they started jogging together, how long, in minutes, does it take until they are next together?
:
Include the rest times in the times to complete each lap except the final lap of each. B requires 7 min per lap, M requires 10 min
They should be together again at 69 min
Least common multiple of 7 and 10 is 70 min, B will complete 10 laps: 9(7)+6 = 69 min, M will complete 7 laps: 6(10) + 8 = 68 min, wait 1 min when B joins him at 69 min