Answer :

To determine the cash payment for a radio priced at Rs. 1800 with a discount of 5%, we need to follow these steps:

1. Calculate the discount amount:
- The radio price is Rs. 1800.
- The discount is 5%.

2. To find the discount amount:
- Convert the percentage to a decimal by dividing by 100:
[tex]\(5\% = \frac{5}{100} = 0.05\)[/tex].
- Multiply the radio price by this decimal value:
[tex]\( \text{Discount Amount} = 1800 \times 0.05 = 90 \text{ Rs}\)[/tex].

3. Calculate the final payment:
- Subtract the discount amount from the original price:
[tex]\( \text{Final Payment} = 1800 - 90 = 1710 \text{ Rs}\)[/tex].

So, the cash payment for the radio after applying the 5% discount is Rs. 1710.