If the cliff is 850m away, the sound travelled there and back which is 850m * 2 = 1700m
The sound took 5 seconds to travel 1700m, so it's moving at 1700m/5s = 340 m/s
Answer:
21 mpg
Explanation:
So the distance in miles that his car could cover within gas fill up is the difference in odometer reading
d = 54008 - 53762 = 246 miles
So if it takes 11.8 gallons of gas to cover 246 miles then his mile per gallon can be calculated as
246 / 11.8 = 20.85 mpg