A company experiments with different offers and website designs. Possible actions by the website include offering the customer an instant discount, offering the customer free shipping, or doing nothing. The experiment found that customers make purchases 6% of the time when offered the instant discount, 8% when offered free shipping, and 2% when no special offer was given. Suppose 20% of the customers are offered the discount and an additional 40% of the customers are offered free shipping.

What percent of customers who visit the site made a purchase?