John and Anna each can run at a speed of 8.20 mph and walk at a speed of 3.70 mph. They set off together on a route of length 5.00 miles. Anna walks half of the distance and runs the other half, while John walks half of the time and runs the other half. (a) How long does it take Anna to cover the distance of 5.00 miles? Express your answer numerically, in minutes. (b) Find Anna's average speed. Express Anna's average speed numerically, in miles per hour. (c) How long does it take John to cover the distance? Express the time taken by John numerically, in minutes. (d) Now find John's average speed. Express John's average speed numerically, in miles per hour.