Fernando Alonso and Sebastian Vettel go for a car race. Bedore start of race, both of them have the exactly same amount of fuel in their respective cars. With the given fuel Fernando can drive continuously for 4 hours while Vettel can drive 1 hour more i.e five hours.
After a time they realize that amount of fuel left in Sebastian car is 4 times the fuel in Fernando car.
For long they are racing ?	Select the correct option
A) 15/4 hours
B) 15/3 hours
C) 15/2 hours
D) 15/2 hours
E) None
Solution:   15/4 hours   Explanation:   Let us say they drive for "t" hours and initial fuel is "f"   15/4 hoursmount of fuel consumed by Fernando car is ft/4   15/4 hoursmount of fuel consumed by Sebastian car is ft/5   15/4 hourss per given condition,   f - ft/5 = 4(f-ft/4)   t = 15/4 hours   15/4 hoursnswer 15/4 hours
<result>A</result>
Fernando Alonso and Sebastian Vettel go for a car race. Bedore start of race, both of them have the exactly same amount of fuel in their respective cars. With the given fuel Fernando can drive continuously for 4 hours while Vettel can drive 1 hour more i.e five hours.
After a time they realize that amount of fuel left in Sebastian car is 4 times the fuel in Fernando car.
For long they are racing ?