An emergency vehicle travels 10 miles at a speed of 50 miles per hour. How fast must the vehicle travel on the return trip if the round trip travel time is 20 minutes?
Created: 6 years ago |
Updated: 3 years ago
best des
50 miles travel in 60 minutes
10 miles travel in ( 60×10)/50 = 12 min
Now, 20 - 12 = 8 min
In 8 minutes it has to go 10 miles
In 1 minutes it has to go 10/8 miles
In 60 minutes it has to go ( 10×60)/8 = 75 mph
Md Azizur Rahman
Founder of Satt
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