A sweetselller has 420 kaju burfis and 150 badam burfus. He wants to stack them in such a way that each stork has the same number, and they take up the least area of the tray. How many of these can be palced in each stack ? How many stacks are formed ?

Explanation

To solve the problem of how to stack the kaju burfis and badam burfis, we need to find the highest common factor (HCF) of the two quantities, which will tell us how many sweets can be placed in each stack.

### Step-by-Step Solution:

1. **Identify the quantities of sweets:**
- Kaju burfis = 420
- Badam burfis = 150

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