Sam is negotiating with one of his customers over discounts. To help Sam in his decision-making, calculate the following discounts and margins:

a) The customer would like a 15% discount on Smart Sports’ selling price of £20 for a team kit. If he agrees to this, how much will he be charged?

b) A tennis racquet has a retail price of £60. If the retailer makes a margin of 45%, what would be Smart Sports’ selling price to the retailer?

c) Sam would like to ensure the business receives £51 for each badminton racquet sold. If it sells them through a retailer who requires a margin of 40%, what will be the final selling price of each racquet to the badminton player?