Question: Selling price of an article is Rs. 5175 and discount of 25 percent is offered. What is the marked price of the article?

1. Rs. 6600
2. Rs. 6900
3. Rs. 7000
4. Rs. 8500

Answer: 2. Rs 6900

Solution:
The equation for the following is
marked price be m.
m-0.25m=5175
0.75m=5175
M=Rs 6900