A worker, whose day-work wages is Rs. 2.50 an hour, received production bonus under the Rowan Scheme. He carried out the following work in a 48 hour week: Job 1 1,500 items at 4 hours per 1.000 Job 2 1.800 items at 3 hours per 1,000 Job 3 9,000 items at 6 hours per 1,000 Job 4 1,500 items for which no standard time" was fixed and it was arranged that the worker would be paid a bonus of 25 per cent. Actual time on the job was 4 hours. Job 5 2,000 items at 8 hours per 1,000 cach item was estimated to be half-finished. Job 2 was carried out on a machine running at 90 per cent efficiency and an extra allowance of 1/9th of actual time was given to compensate the worker. 4 hours were lost due to power cut. Calculate the carnings of the worker, clearly stating your assumptions for the treatment given by you for the hours lost due to power cut