The cyclist or bikers were able to travel 2/3 of his journey at the average speed of 12 miles/hour.Then the remaining 1/3 of his journey which is 30 miles for 3 hours.Let's find out how many miles did he travelled and what is the average unit rate of his travel.=> Since 1/3 of his trip is 30 miles, thus 2/3 of his trip is 60 miles.=> 30 + 60 = 90 miles is his total trip
12 miles per hour for his 60 miles.=> 60 miles / 12 miles per hour = 5 hours.60 miles for 5 hours.30 miles for 3 hours => 90 miles for 8 hours.=> 90 / 8 = 11.25 miles per hour.
