Musa ships cars into ghana, nigeria and benij republic from the united states of america. the import duty costs are 10%, 25% and 12% respectively for used cars from the three countries and 25%, 40% and 20% for new cars. he has landed a used benz c300 and a new toyota highlander for $12,000 and $30,000 respectively. for how much should he markup the cars, if he desires to make a minimum profit of 15% after giving a discount of 10% to a reseller in abuja, nigeria?