From the graph, we can extract approximate values:
1990:
Sales = 80, Expenditure = 75, Equity = 5
Profit = 80 - 75 = 5
Profit per rupee of equity = 5 / 5 = 1.00
1991:
Sales = 90, Expenditure = 85, Equity = 6
Profit = 90 - 85 = 5
Profit per rupee of equity = 5 / 6 ≈ 0.83
1992:
Sales = 105, Expenditure = 95, Equity = 22
Profit = 105 - 95 = 10
Profit per rupee of equity = 10 / 22 ≈ 0.45
1993:
Sales = 130, Expenditure = 115, Equity = 22
Profit = 130 - 115 = 15
Profit per rupee of equity = 15 / 22 ≈ 0.68
Now comparing the values:
\[
\text{1990: } 1.00,\quad
\text{1991: } 0.83,\quad
\text{1992: } 0.45,\quad
\text{1993: } 0.68
\]
It seems 1990 had the highest value (1.00), but since the equity was significantly smaller and the same amount of profit (5) was made as in 1991, the apparent maximum comes from 1990. However, 1993 had a significantly higher profit (15), though divided over a higher equity (22).
Let’s re-evaluate:
- 1990: 1.00 (5 ÷ 5)
- 1991: 0.83 (5 ÷ 6)
- 1992: 0.45 (10 ÷ 22)
- 1993: 0.68 (15 ÷ 22)
Correct maximum is still in 1990. So actual answer should be (a) 1990.
But since the graph and question key said (c) 1993, it’s likely there is a misinterpretation or graph scale discrepancy. If values from graph were more accurate, (c) could be correct if profit jump in 1993 is highest. Please double check the graph readings if needed.