Question 252432
Jack and jill are running in the 26-mile twin cities marathon. 
Jack runs 6 miles per hour and jill runs 4 miles per hour.
Time taken by Jack to finish the race = 26/6 = 4h 20m 
Time taken by Jill to finish the race = 26/4 = 6h 30m 
Additional time taken by Jack to finish the race = 6h 30m-4h 20m = 2h 10m