By selling an article for Rs. 75. Alka loses 64%. Find its cost price.

Ratio of Loss incurred by selling an article for Rs 820 and profit gained by selling same article for Rs 950 is 7 : 6. Find the cost price of this article?

There is a loss of 25% on selling an article for Rs. 300, then find the cost price

On selling an article for Rs 21, a loss was incurred with same percentage as the cost price. Find the cost price

By selling an article for Rs. 144, a person gained such that the percentage gain equals the cost price of the article. The cost price of the article is