In the accounting department of a firm two workers are in charge of entering data from the sale slips (which are not always in good quality) to the computer. Data entry must be fast and correct (any error may cause problems for the company). One of the workers is in his late 20s, the other one, however, is in her late 50s. The reflectance of task background is almost 70%. The illumination level in the office is 600 Luxes. Do you think this illumination is suitable? If not, what do you recommend. Clearly explain your approach. You may use the table provided.