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Study the following graph to answer these Questions.
The following pie-chart gives the percentage of people in a city working in night shifts from various Industries. The bar graph shows the percentage of females from these industries working in night shifts.
What is the approximate average number of females working in night shifts from all the industries together?
It is given that 8% of 40250 are in  Sales. Thus number of people in sales = 8% of 40250 = 3220
Also, females in sales are 60%. Number of females in sales = 60% of 3220 = 1932. Thus remaining are males which are 3220 - 1932 = 1288
Similar things can be calculated for other sectors as well and can be obtained as below table:
Approx average number of female = (1932+2254+966+966+1449)/6 =Â ~2227Â
