When a price of commodity fall from ₹ 10 to ₹9 per unit it quantity fall 30% calculate pes

When a price of commodity fall from ₹ 10 to ₹9 per unit it quantit

1.	When a price of commodity fall from ₹ 10 to ₹9 per unit it quantity fall 30% calculate pes
Answer» As the change in quantity demanded is given 30% we should find change in price ... That is 9-10/10×100= -10% Now, ped = -%change in qd/%change in price= -30/-10 = 3