Trail Inc. has 500 defective backpacks that it manufactured at a total cost of $22,000. Trail can sell the backpacks in their present condition for $17,500. As an alternative, Trail can repair the backpacks at a total cost of $14,000. If Trail decides to repair the backpacks, what is the minimum per-unit selling price that Trail will need to charge to be as well off as it would be if it just sold the backpacks in their present condition?_____