Find the economic life of the following asset, having these cash flow estimates MARR is 12% per year. Suppose that a firm wishes to create an endowment for a laboratory. It will earn an interest of 12% per year. Cash requirement are estimated to be $150,000 (to establish it), $40,000 per year indefinitely. Also $30,000 every fourth year and $50,000 every ten years for equipment replacement indefinitely. What amount of endowment principal (CW) is required to support remaining cash requirements