how would these be solved

Riesel Hay Haulers is considering the purchase of a new hay-hauling machine that would automatically pick up square bales of hay instead of having to pay workers to manually pick up the bales. The equipment has an initial cost of $94,500, a useful life of 12 years, and a salvage value of $4,500. Currently, Riesel Hay Haulers pays 6 employees a total of $40,000 to manually pick up the bales and stack them on a trailer. The automated equipment would have the following operating costs (all cash): a. Assume sales are $75,000 and are all for cash. Calculate the internal rate of return. b. Calculate the simple rate of return. a. Assume sales are 525,000 and are all for cash, Calculate the inte b. Calculate the simple rate of return. c. Calculate the payback period. Extra Practice