one trip around a running track is 440 yards.one jogger can complete one lap in 8 minutes, other can complete it in 6 minutes . how long will it take for both joggers to arrive at their and their starting point together if they start at the same time and maintain there jogging pace



Answer :

it will take 3 laps for the slower jogger and 4 laps for the other joggers as 
accounting for the slower jogger
after his 1st lap the others have done 1 lap and a 1/3
after his 2nd lap the others have done 2 laps and 2/3
after his 3rd lap the others have done 4 laps