Mangoes were selling at Rs 20 per kg last season. This season they are selling at Rs 23 per kg. Find the percentage increase or decrease in price.

The price of a drug changed as follows: a. reduced from Rs 72 to Rs 60. Find the percentage decrease in the price. b. increased from Rs 60 to Rs 72. Find the percentage increase in price.

Asha's mother told her that when she was a child, the price of wheat was Rs2/kg. The price of wheat today is Rs36/kg. Find the percentage increase in the price of the wheat.

The price of a fan increase from Rs 3260 to Rs 3749. Find the increase per cent in its price.

On selling an article for Rs. 100, Renu gain Rs. 20. Her gain percentage is

By selling an article for Rs 432, a shopkeeper gains 20% . Find the price of the article.

A vendor buys oranges at Rs 26 per dozen and sells them at 5 for Rs 13. Find his gain percent.

Sugar is sold at Rs. 17 3/4 per kg. Find the cost of 8 1/2 kg of a sugar.

A shopkeeper sells Mathematics books at Rs 265 per book. In one day he sells 40 books and earns a profit of Rs 600. Find the gain per cent and the cost price of the book.

A shopkeeper sells TV at Rs 40,250. He sells 6 TV sets in a day and earns a profit of Rs 31,500. Find the cost price and the gain per cent of one TV.

A dealer buys 200 quintals of rice at Rs. 1200 a quintal. He spends Rs. 10000 on transportation and storage. Then he sells the rice at Rs. 13 a kg. Find his profit or loss. Also calculate it as a percentage.