Due to 20% reduction in the price of wheat, a person can buy 10 kg more wheat than before for Rs 600, what is the price of wheat after the decrease in the price?

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 average expenditure of a man for the first five months of a year is Rs. 5,000 and for the next seven months is Rs. 2,300 during a year. His average monthly expenditure is : 

Direction: A shopkeeper has some kg. rice of same price. He sold 150 kg. rice at 25 Rs. per kg. and earned a profit of 25%, another 180 kg. rice is sold at a profit of 20% and rest are sold at a loss of 10%. If the shopkeeper earns Rs. 1230 profit on all the rice that he has sold then answers the following question:

If the shopkeeper earns 10% profit instead of 10% loss on the rest rice then find the difference between the old and new profit. 

The curved surface area of a cylindrical pillar is $$ {264 m^{2}}$$ and its volume is $$ {924 m^{3}}$$. Find the ratio of its diameter to its height.

Find the area of a quadrilateral whose diagonal is 10 cm. And the length of the length put on it is 6 cm and 5 cm respectively. 

If x + y = 1 and xy (xy – 2) = 12,then the value of x⁴ + y⁴ is:

When a positive integer n is divided by 5 the remainder is 2. What is the remainder when the number 3n is is divided by 5 ?