Net Present Value Method-Annuity E & T Excavation Company is planning an investment of $528,600 for a bulldozer. The bulldozer is expected to operate for 3,000 hours per year for seven years. Customers will be charged $140 per hour for bulldozer work. The bulldozer operator costs $36 per hour in wages and benefits. The bulldozer is expected to require annual maintenance costing $30,000. The bulldozer uses fuel that is expected to cost $47 per hour of bulldozer operation. Present value of an Annuity of $1 at Compound Interest Year 6% 10% 12% 15% 20% 0.943 0,909 0,893 0.870 0.833 1.833 1.736 1.690 1.626 1.528 2.673 2.487 2.402 2.283 2.106 3,465 3.170 3.037 2.855 2.589 4.212 3.79 3.605 3.353 2.991 4.917 4.355 4.111 3.785 3.326 5.582 4.868 4.56 4.160 3.605 8 6,210 5.335 4,968 4.487 3.837 6.802 5.759 5.328 4.772 4.031 7.360 6.145 5.650 5.019 10 4.192 a. Determine the equal annual net cash flows from operating the bulldozer. Enter all amounts as positive numbers. Cash inflows: Hours of operation Revenue per hour Revenue per year Cash outflows: Hours of operation