Mr. Smart is working by employing skilled workers. He is considering the introduction of some incentive scheme - either Halsey Scheme or Rowan Scheme of wage payment for increasing the Employee productivity to cope with the increased demand for the product by 10%. He feels that if the proposed incentive scheme could bring about an average 5% increase over the present earnings of the workers, it could act as sufficient incentive for them to produce more and he has accordingly given this assurance to the workers. As a result of the assurance, the increase in productivity has been observed as revealed by the following figures for the current month: RO 25 are the Hourly rate of wages (guaranteed), Average time for producing 1 piece by a worker at the previous performance is 20 seconds (This may be taken as time allowed), No. of working hours per day for each worker is 480 minutes and the worker worked for 360 minutes and his actual production during the day was 1,550 units. Calculate bonus earned by the work under Halsey Scheme plan. a. RO 175 b. RO 150 C. RO 157 d. RO 25