On a trip of 200 miles, a man travels at the rate of 40 miles per hour for the first 100 miles. For the rest of the trip, he travels at the rate of 55 miles per hour . What is his average speed, in miles per hour, for the total trip ?
Created: 6 years ago |
Updated: 2 years ago
best des
Total time spent = 100/40 + 100/55 = 5/2 + 20/11 = 95/22 hours
Average speed = 200 / (95/22) = 200 x 22 / 95 = 880/19 miles per hour
Md Azizur Rahman
Founder of Satt
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