A lady has 25 paise and 50 paise coins in her purse. If in all she has 40 coins and value of her money is Rs. 12.75, how many coins of each type does she have?

Explanation

To solve the problem, we will use a system of linear equations. Let's denote:

- \( x \) = number of 25 paise coins
- \( y \) = number of 50 paise coins

### Step 1: Set up the equations based on the problem statement.

From the problem, we have two pieces of information:
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