|Question||a. Using the midpoint method, calculate the price elasticities of demand for group A and group B.
b. Explain how the discount will affect total revenue from each group.
c. Suppose Nile.com knows which group each customer belongs to when he or she logs on and can choose whether or not to offer the 10% discount. If Nile.com wants to increase its total revenue, should discounts be offered to group A or to group B, to neither group, or to both groups?