What way of calculating ROI makes it easiest to compare investments?

Problem 1. the following balance sheet contains errors. lopez services,inc. balance sheet for the year ended december 31, 20-- assets liabilities current assets: current liabilities: cash $ 6,170 accounts receivable $ 9,000 accounts payable 8,500 accum. depr- building 13,525 supplies 1,590 accum. depr- equipment 6,340 prepaid insurance 345 net income 12,500 land 25,000 total current assets $ 42,105 total liabilities $ 40,865 stockholders equity property, plant, and equipment: wages payable $ 500 building $ 45,500 retained earnings 10,000 equipment 28,250 total stockholders' equity $ 64,490 total property, plant, and equipment 73,750 total assets $115,855 total liabilities and stockholders' equity $115,855 (a) list the errors in the balance sheet above and (b) prepare a corrected balance sheet using ms excel