Question

Dan is preparing for a 10-mile race. he will run the first 5miles at an average speed of 6miles per hour, the next 3miles at an average speed of 8miles per hour, and the final 2miles at an average speed of 10miles per hour. how mane hours rounded to the nearest hundredth of an hour, will it take Dan to run the race if he follows his plan?

Answer 1

5/6+3/8+2/10 = 1.41