Answer :

To determine the cost of [tex]$0.7$[/tex] kg of apples where the price per kilogram is ₹ 89.50, we can follow these steps:

1. Identify the given data:
- Price per kilogram of apples: ₹ 89.50
- Weight of apples to be bought: [tex]$0.7$[/tex] kg

2. Understand the relationship:
- The cost of a variable weight of apples can be found by multiplying the price per kilogram by the weight in kilograms.

3. Set up the multiplication:
- Multiply the price per kilogram (₹ 89.50) by the weight in kilograms ([tex]$0.7$[/tex] kg).

[tex]\( \text{Cost} = \text{price per kg} \times \text{weight in kg} \)[/tex]
[tex]\( \text{Cost} = ₹ 89.50 \times 0.7 \)[/tex]

4. Calculate the result:
- When you multiply ₹ 89.50 by [tex]$0.7$[/tex], you obtain:

[tex]\( ₹ 89.50 \times 0.7 = ₹ 62.65 \)[/tex]

Therefore, the cost of [tex]$0.7$[/tex] kg of apples is ₹ 62.65.