CMA Foundation · Fundamentals of Business Mathematics and Statistics · Statistical Representation of Data
A multiple bar diagram shows exports of a firm (₹ crore) as 20, 25, 30 and 25 in four successive years. What is the percentage increase in the bar height from the first year to the third year?
The bar height rises by 50 percent. Exports grow from ₹20 crore in the first year to ₹30 crore in the third, an increase of 10 crore. Dividing by the original 20 crore base and multiplying by 100 gives 50 percent.
- A30%
- B40%
- C50%Correct
- D60%
Explanation
Increase = 30 − 20 = 10 crore. Percentage = 10/20 × 100 = 50%. Check: 20 × 1.5 = 30. The 40% option wrongly uses 30 as the base (10/25 would be 40%), which is not the first-year value.
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