Explanation:

- Let's denote the cost price of the article as $x$.

- The article is sold at 10% below its cost price, so the selling price is $0.9x$.

- If sold for Rs332 more, the selling price becomes $0.9x+332$.

- To achieve a 20% profit, the selling price should be $1.2x$.

- So, we have the equation: $0.9x+332=1.2x$.

- Solving for $x$, we get:

$$

0.9x + 332 = 1.2x \implies 332 = 1.2x - 0.9x \implies 332 = 0.3x \implies x = \frac{332}{0.3} = 1106.67

$$

- The original selling price $0.9x$ is:

$$

0.9 \times 1106.67 = 996

$$

- So, the original selling price is Rs. 996.