question_answer

If Prem goes from city A to city B at 3 different speeds 30 kmph, 45 kmph, and 60 kmph covering the same distance with each speed, he takes total 6.5 hours. The respective mileages per liter of fuel are 11 km, 14 km and 18 km for the above speeds. Prem's friend Neel is an efficient driver and wants to minimise his friend's car's fuel consumption. So he decides to drive Prem's car one day from city A to city B. How much fuel will he be able to save?

A)  4.2 liters                      

B)  4.5 liters

C)  0.7 liters                      

D)  0.3 liters

E)  None of these