#1 - Distance Time Riddle
Before the start of the car race, Tony Stewart and Jamie Mcmurray have the same amount of fuel in the car. With this fuel Tony Stewart can drive for 4 hours while Jamie can drive five hours.
After a time they realize that amount of fuel left in Tony car is 1/4th of the fuel in Jamie car.
For long they are racing ?
15/4 hours
Explanation:
Let us say they drive for "t" hours and initial fuel is "f"
Amount of fuel used by Tony car is ft/4
Amount of fuel used by Jamie car is ft/5
As per given condition,
f - ft/5 = 4(f-ft/4)
Solving, t = 15/4 hours