Let the original cost price be \( x \).
- Selling price with a 10% profit = \( 1.1x \).
- If the cost price was reduced by 25%, the new cost price would be \( 0.75x \).
- If the selling price was increased by ₹20, the new selling price would be \( 1.1x + 20 \).
The new profit would be 60%, so the equation is:
\[
1.1x + 20 = 1.6 \times 0.75x
\]
Solving this equation gives \( x = 200 \).
Thus, the correct answer is 200.