The Caribbean Marathon bicycle race is a distance of 112 miles. Andrew finished the race in 37 hours. (a) Calculate his average speed. mph (2) Brandon finished the race at an average speed of 28 mph. (6) Calculate his time to complete the race. hrs. (2) The starting time for this race is 7:45 am David completed the race in 3 hours and 40 minutes. (c) Calculate the time at which David completed the race. (2) Carlton finished the race at 11:35 am (d) Calculate the time taken for Carlion to complete the race. (2)