Answer:
C
Step-by-step explanation:
Here, we are to calculate how many more pumpkins to be sold by Jack.
we proceed as follows;
Price elasticity of demand = percentage change in demand/percentage change in price
Percentage change in price = 20%
Let percentage change in demand be D
So, D/20=1.5
D = 20X1.5 = 30
Therefore Option(C)30% more