A computer dealer offers to lease a system to you for $50 per month for two years. At the end of two years, you have the option to buy the system for $500. You will pay at the end of each month. He will sell the same system to you now for $1,200 cash. If the going interest rate is 12%, which is the better offer? (note: this problem has two separate computation, for that reason, it is valued at 30 points with 10 pts bonus, don't read into it, just follow the facts and compute)