A car has travelled 50 miles at 70 mph.
It started its journey with eight gallons of fuel but its tank has been leaking throughout the journey and is now dry.
The car completes 25 miles per gallon.
How many gallons of fuel does it leak per hour?
Solution -
since the consumption by engine is 50/25 = 2 gallons, it has leaked 8-2=6 gallons.
time to travel=50/70 hr = 5/7 hr
rate of leakage=6/(5/7)= 8.4 gallons per hour
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