What is the formula of marked price?

A cow as sold Rs. 1980 with profit of 10% . What is the cost price of cow ?

If cost price is Rs.230 and selling price is Rs.195, then the Loss is ___________

A second hand car was sold for Rs 190000, at a loss of Rs 85. Find the CP of the car.

Arun sold a book for Rs 100 which he has bought for Rs 50. Find his profit or loss percent.
 

Namitha offers a discount of 20% on all the items at her shop and still makes a profit of 12%. What is the cost price of an article marked at Rs 280?

A bicycle marked at Rs 1,500 is sold for Rs 1,350. What is the percentage of the discount?

4/11 of a commodity was sold at a loss of 20% and the rest at a profit of 20%. The net gain is Rs. 120. The cost of the commodity is ____________