A man walks 30 minutes at an average speed of 3 miles/hour. He waits 10 minutes for a bus, which bring him back to his starting point at 3:15. If he began his walk at 2:25 the same afternoon, find the average speed of the bus?
Created: 6 years ago |
Updated: 2 years ago
best des
Here, 2:25 pm to 3:15 pm = 50 minutes
Time taken by bus = 50 - (30 + 10) = 10 minutes = 10/60 hour = 1/6 hour
The man walked for = 30 minutes = 30/60 hour = 1/2 hour
He walked = 3×1/2 = 3/2 miles
So, speed of the bus = 3/2 ÷ (1/6) = 9 miles per hour
Md Azizur Rahman
Founder of Satt
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