alim Service company owns several taxis that were purchased four years ago for $29000 each. The current market value is $8000 each. If they are kept for another 6 years, they can be sold for $3000 each. The annual maintenance cost per cab is $600 a year. Salim Service is looking at replacing the cabs with the option to lease new cabs at an annual cost of $7500 per year per cab which includes free maintenance. How much more would it cost them per year to switch to leasing? Assume an interest rate of 10%