If a shopkeeper bought 250 books for 75 each.He spent ₹500 on the binding of books.Then he sold it in ₹ 2000.Calculate the profit or loss percentage.

A VCR and TV were bought for ₹8,000 each,The shopkeeper made a loss of 4% on the VCR and a profit of 8% on the TV.Find the gain or loss percent on the whole transaction.

Raju bought a book for ₹ 35.65. He gave ₹ 50 to the shopkeeper. How much money did he get back from the shopkeeper?

Aniruddha bought some books for rupes 60 . He had bought 5 more books for the same amount ,each books would have cost him 1 rupees ,less than . Find the number of books bought by Aniruddha.

Mohan had brought certain number of books for rupes 48, If he had bought 4 more for the same amount , then the cost of each book would have been reduced by 1 rupee . Find the number of books bought by him.

A trader bought articles for Rs. 900. Five articles were found to be damaged. He sold each of the remaining articles at rupees two more than what he had paid for it. He got a profit of Rs. 80 on the whole transaction. Find the number of articles he bought.

A milkman sold two of his buffaloes for 20,000 each,On one he made a gain of 5% and on the other a loss of 10%.Find his overall gain or loss.(Hint:Find CP of each)

A furniture dealer deals in only two items - tables and chairs. He has Rs. 50,000 to invest and has storage pince of at most 60 pieces. A table costs Rs. 2500 and a chair Rs. 500. He estimates thnt from the sale of one table , he can make a profit of Rs. 250 and that from the sale of one chair a profit of Rs. 75. How many tables and chairs he should buy from the available money so as to maximise his total profit assuming that he can self all the items which he buys.

A man bought a certain number of glass vessels for Rs. 600. He broke two of them. Then he sold each of the rest for Rs. 10 more than he had paid for it, thereby gaining Rs. 50 on the whole. How many glass vessels did he buy?

Manufacturer can sell x items at a price of rupees (5-(x)/(100)) each. Thecost price of x items is Rs ((x)/(5)+500) . Find the number of items he should sell to earn maximum profit.

A runner weighing 60 kg raises the CG of his body by 0.25 m during each step of 1 min length. If he runs for 6 km and there is loss of 10% of the energy due to friction of air etc. What is the total energy required by him from his intake of food ?