5.16 A construction firm has collected data on dump trucks, as shown in Table 15-5 (dollar amounts). Table 15-5 Age in Years 0-1 1-2 2-3 3-4 4-5 7000 7500 Maintenance Cost 9700 7700 9000 Lost Revenue for Down Time 800 500 1200 800 1000 Year-End Trade-In Value 16 000 6000 9000 3500 2500 5.16 A construction firm has collected data on dump trucks, as shown in Table 15-5 (dollar amounts). Table 15-5 Age in Years 0-1 1-2 2-3 3-4 4-5 7000 7500 Maintenance Cost 9700 7700 9000 Lost Revenue for Down Time 800 500 1200 800 1000 Year-End Trade-In Value 16 000 6000 9000 3500 2500