An article listed at 800 is sold at successive discounts of 25 % and 15 %. The buyer desires to sell it off at a profit of 20 % after allowing a 10 % discount. What would be his list price?

Ram does a work in 40 days and Shyam does same work in 60 days. If efficiency of Mohan is 20% less than the combined efficiency of Ram and Shyam together then working alone Mohan will complete the whole work in how many days?

The shadow of the tower becomes 60 meters longer when the altitude of the sun changes from 45 ° to 30 °. Then the height of the tower is 

Base of the right prism is an equilateral triangle. If its height reduced to one-fourth and each side of the base is tripled, then the ratio of the volumes of the old prism to the new prism is-

18 percent of the coal was destroyed in a coal mine. If only 492 tons of coal was received, then tell how much coal was destroyed?

Study the following table carefully and answer the questions given below.

In which year was the difference in number of students in Arts and Science exactly 130?

Find the simple interest on a principal of Rs.1250 at the rate of 5% for a time of 219 days.