If the income of Company Y in 2018 was Rs. 600 crores, what was its expenditure in that year?
Answer: B
Profit % = \(\frac{\text{Income} - \text{Expenditure}}{\text{Expenditure}} \times 100\).
Let E be the expenditure.
In 2018, the profit percentage for Company Y was 40%.
40 = \(\frac{600 - E}{E} \times 100\)
0.40 = \(\frac{600}{E} - 1\)
1.40 = \(\frac{600}{E}\)
E = \(\frac{600}{1.4} = \frac{6000}{14} \approx 428.57\) crores.