Calculate the return-on-investment for this scenario. A large automobile dealership decides to provide a one-day onsite training for its sales associates to help them be effective in explaining the features and benefits of extended warranties. The dealership sells 3,500 automobiles a year. Before the training, only 25% of customers purchased an extended warranty. After the training, 30% of customers are purchasing the extended warranty. Extended warranties sell for $200. The costs of the training are: Trainer: $2,500 Travel expenses for trainer: $1,200 Curriculum: $500 Refreshments and lunch: $350