The graph given below gives the yearly details of money invested in producing a certain product over the years 1991 to 1995. It also gives the profit (in ‘000 rupees)
Question: 1
In which year was the increase in raw material maximum?
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Look for the tallest difference between consecutive years' segments for the same category.
From the bar chart:
- Raw material height increases from 1993 to 1994 is visually the largest jump compared to other years.
- Increases in earlier years are smaller in magnitude.
Hence, maximum increase occurs in 1994.
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Question: 2
In which period was the change in profit maximum?
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Focus on the top bar segment (profit) and visually compare consecutive years for maximum difference.
Overheads = black segment. Raw material = bottom unshaded segment.
In 1992, overhead bar is tall compared to raw material bar height, giving the maximum ratio.
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Question: 5
What percentage of the costs did the profits form over the period?
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In stacked bar charts, profit percentage = (profit height ÷ total height without profit) × 100.
Total profit over 5 years ≈ sum of top segments.
Total costs = sum of all other segments (raw material + wages + overheads + interest).
Ratio ≈ \(\frac{\text{Total Profit}}{\text{Total Costs}} \times 100\) ≈ 5%.
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Question: 6
If the interest component is not included in the total cost calculation, which year would show the maximum profit per unit cost?
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When excluding a cost component, subtract its segment height before calculating ratios.
Profit per unit cost (excluding interest) = \(\frac{\text{Profit}}{\text{Raw material + Wages + Overheads}}\)
1995 has a high profit segment and relatively low sum of the other three components (excluding interest), yielding the highest ratio.