A AND B DRIVE TO A PETROL PUMP. A SAYS “I WANT 20 LITRES OF PETROL” AND B SAYS “I WANT RS. 20/- WORTH OF PETROL”. WHAT CAN YOU SAY ABOUT A AND B’S PRICE ELASTICITY OF DEMAND ON PETROL?

A AND B DRIVE TO A PETROL PUMP. A SAYS “I WANT 20 LITRES OF
PETROL” AND B SAYS “I WANT RS. 20/- WORTH OF PETROL”. WHAT CAN
YOU SAY ABOUT A AND B’S PRICE ELASTICITY OF DEMAND ON PETROL?