A consumer buys 18 units of a good at a price of Rs 9 per unit. The price elasticity of demand for the good is (–) 1. How many units the consumer will buy at a price of Rs 10 per unit? Calculate.
P1 = Rs9
P2 = Rs10
Ed = -1
Therefore, the consumer will buy 16 units of the good at a price of Rs 10.