Vishal sells a bag at a profit of 40%. If Vishal's profit is ₹880, then what is the cost price of the bag?

Rahim bought a T.V. with 20% discount on list price. Had he bought it with 25% discount he would have saved ₹ 500. At what price did he buy the T.V?  

The marked price of a watch was ₹ 720. A man bought the same for   ₹  550.80 after getting two successive discounts. the first being 10 %. then the second discount rate is 

The ratio of two numbers is 2: 3 and their L.C.M is 48.  What is the number?

If $$ {x^{12}+x^{3}\over {x^{6}}}=0$$ find $$ {x^{36}+{1\over x^{36}}}$$

The value of   $${(75.8)^2-(55.8)^2\over20}$$

What is the value of $${\sqrt{1-cosA\over{1+cosA}}}$$?

A shopkeeper offers 10% discount on every   purchase of an article. It also offers an additional discount of 12%. If the payment is made in cash. If the original price of an item is Rs. 250, how  much a customer will pay. If he wants to pay the price in cash?