Q4. Assume that the distance that a car runs on one liter of petrol varies inversely as the square of the speed at which it is driven. It gives a run of 25km per liter at a speed of 36km/h.At what speed should it be driven to get a run of 36km per liter ?
a. 34km/h
b. 33km/h
c. 31km/h
d. 30 km/h