There are two categories of employees in 2019 whose total strength remained the same in 2020. What are these two categories?
Consider the following for the next four (04) items that follow:<br><br>The following Pie-Charts show the percentage of different categories (A, B, C, D, E and F) of employees in a company in the year 2019 and 2020. The total number of employees was 4000 in 2019 and 5000 in 2020.
- A. C and B
- B. E and A
- C. E and F
- D. C and D ✓
Correct Answer: D. C and D
Explanation
Let the percentages of C and D be C_{19}, D_{19} and C_{20}, D_{20}. We require 4000(C_{19}+D_{19}) = 5000(C_{20}+D_{20}), which holds true for categories C and D combined based on the exact pie chart distribution values.
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