show work plz A and B

Two alternatives have been proposed for a government project. The estimated costs associated with each alternative are given below. It can be shown that both Alternative I and Alternative II have modified B-C ratios greater than one, meaning that either can be considered as an acceptable alternative. Use the modified B-C ratio method, with AW as the equivalent-worth measure, to determine which alternative should be selected at an interest rate of 3% per year. Hint: Perform an incremental analysis; do not be tempted to incorrectly choose the alternative with the higher modified B-C ratio. Alternative Alternative I Alternative II Installed cost, $ $1,250,000 $1,050,000 Annual maintenance, S per year $180,000 $125,000 Annual benefits, $ per year $550,000 $540,000 Salvage value, $ $11,000 $9,800 Project life, years 28 28 (a) With AW as the equivalent-worth measure, what is the modified AB/AC ratio for (Alternative I - Alternative II)? (b) With AW as the equivalent-worth measure, which alternative should be selected, based on the modified B/C ratio method of analysis