A sum of `Rs. 8400` is made up of `50 , 20 , 10` and `5` rupee notes. The number of `10` rupee notes is five times the number of `5` rupee notes, four times the number of `20` rupees notes and ten times the number of `50` rupees notes. What is the number of notes in each denominator?

Answer

To solve the problem step by step, we can follow these instructions:

### Step 1: Define Variables
Let:
- \( x \) = number of 50 rupee notes
- \( y \) = number of 20 rupee notes
- \( z \) = number of 10 rupee notes
- \( w \) = number of 5 rupee notes