Find the single equivalent discount for successive discounts of 12%, 18% and 25% on the marked price of a car. 

A man purchases 100 copies of a book from the publisher and gets a discount of 25%. He buys 50 copies from a retailer at a discount of 10%. He got an overall discount of:

If two numbers are respectively 20% and 50% of a third number, what is the percentage of the first number to the second?

An article is sold Rs.680 after two successive discounts of 20% and x% on its marked price. The marked price of the article is Rs.1000. What is the value of x?

A dealer marks an article 40% above the cost price and sells it to a customer, allowing two successive discounts of 20% and 25% on the marked price. If he suffers a loss of Rs.140, then the cost price (in Rs.) of the article is:

How much percent above the cost price should a shopkeeper mark his goods so as to earn a profit of 32% after allowing a discount of 12% on the marked price? 

A shopkeeper marked the article 30 % above the cost price. And he gives a discount of 20 % on the M.R.P. find his profit percentage?

After allowing a discount of 12% on the marked price of an article, it is sold for Rs. 880.Find its marked price.