In a bag there are coins of Rs. 1, Rs. 2 and Rs. 5 in the ratio ` 3 : 5 : 7`, respectively. If the total value of the coins in the bag is Rs. 144, find the number of coins of each and also the total value of Rs. 2 coins.

Explanation

To solve the problem step by step, we will follow the given information and perform calculations accordingly.

### Step 1: Understand the Ratio
The coins are in the ratio of Rs. 1 : Rs. 2 : Rs. 5 = 3 : 5 : 7. This means for every 3 coins of Rs. 1, there are 5 coins of Rs. 2, and 7 coins of Rs. 5.

### Step 2: Assign Variables
Let the common multiple be \( x \). Therefore, the number of coins can be expressed as:
- Number of Rs. 1 coins = \( 3x \)
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