The Short-Line Railroad is considering a $175,000 investment in either of two companies. The cash flows are as follows: Year Electric Co. Water Works 1 $ 90,000 $ 35,000 2 50,000 50,000 3 35,000 90,000 4 10 20,000 20,000 (a) Compute the payback period for both companies. (Round your answers to 1 decimal place.) Payback period Electric Co. years Water Works years (b) Which of the investments is superior from the information provided? Electric Co. Both Water Works