You purchased a new Beats headphone on sale for $200. Your grandma also bought one for you as a gift at the same price. Your friend offers to purchase the second headphone from you for $120. If you choose not to sell, the opportunity cost of keeping the second headphone. Calculate.

Answer rating: 100% (QA)

1 You originally purchased 1 Beats headphone for 200 2 Your grandma gifted you a second Beats hea... View the full answer