बेलोच

petrol has few alternatives because people with a car need to buy petrol, there are weak substitutes such as train, walking and the bus but generally if the price of petrol goes up demand proves very inelastic.

petrol has few alternatives because people with a car need to buy petrol, there are weak substitutes such as train, walking and the bus but generally if the price of petrol goes up demand proves very inelastic.