Final answer:
To find the loss percentage, subtract the value destroyed from the total stock value and express it as a percentage.
Step-by-step explanation:
To find the loss percentage, we need to calculate the loss and then express it as a percentage of the total stock. The given stock value is Rs2,00,000 and the value destroyed by the fire is Rs30,000.
Loss = Rs2,00,000 - Rs30,000 = Rs1,70,000
Loss percentage = (Loss / Total stock) * 100 = (Rs1,70,000 / Rs2,00,000) * 100 = 85%
The loss percentage is 85%, which is not provided as one of the options. Therefore, none of the given options is the correct answer.