Question : Study the following chart and answer the question.
What was the difference in the number of B-type of employees during 1997 and 1998?
Option 1: 2285
Option 2: 2222
Option 3: 2325
Option 4: 2654
Correct Answer: 2285
Solution :
Percentage of B-type employees in 1997 = 6%
Total number of employees in 1997 = 42,980
Total number of B-type employees in 1997 = $\frac{42980 \times 6}{100}$ = 2579
Percentage of B-type employees in 1998 = 10%
Total number of employees in 1998 = 48,640
Total number of B-type employees in 1998 = $\frac{48640 \times 10}{100}$ = 4864
$\therefore$ Required difference = 4864 – 2579 = 2285
Hence, the correct answer is 2285.
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