Imaging Inc., a developer of radiology equipment, has stock outstanding as follows: 40,000 shares of cumulative preferred 2% stock, $75 par and 100,000 shares of $50 par common. During its first four years of operations, the following amounts were distributed as dividends: first year, $36,000; second year, $90,000; third year, $115,000; fourth year, $140,000.

Aproperty title search firm is contemplating using online software to increase its search productivity. currently an average of 40 minutes is needed to do a title search. the researcher cost is $2 per minute. clients are charged a fee of $400. company a's software would reduce the average search time by 10 minutes, at a cost of $3.50 per search. company b's software would reduce the average search time by 12 minutes at a cost of $3.60 per search. which option would have the higher productivity in terms of revenue per dollar of input?