Some students planned a picnic.The budget for food was Rs.480. But , 8 of these failed to go and thus the cost of food for each member increased by Rs 10. How many students attended the picnic?

Some students planned a picnic. The budget for food was Rs. 500. But 5 of them failed to go and thus the cost of food for each member increased by Rs. 5. How many students attended the picnic?

A class of 36 students contributed Rs. 540 each for the picnic. Out of these, 7 students decided not to go. They were returned Rs. 490 each. What amount spent on the picnic ?

(i) In how many ways a committee of 4 members out of 5 gents and 6 ladies can be formed if there is at least one lady in the committee? (ii) From a class of 12 boys and 8 girls, 10 students are to be chosen for a competition, including at least 4 boys and 4 girls. The two boys who won the prizes last year should be included. In how many was can this selection be made?

A conical tent is 9m high and the radius of its base is 12m. (i) What is the cost of the canvas required to make it, if a square metre canvas costs Rs. 10? (ii) How many persons can be accommodated in the tent, if each person requires 2 square metre on the ground and 15 m^3 of space to breath in?

A man purchased some pens at Rs. 8 each and some pencils at Rs. 2.50 each. If the total number of pens and pencils purchased is 27 and their total cost is Rs. 150, how many pens did he buy?

The following bar graph (Figure) represents the heights (in cm) of 50 students of Class XI of a particular school. Study the graph and answer the following questions: What percentage of the total number of students have their heights more than 149 cm? How many students in the class are in the range of maximum height of the class? The school wants to provide a particular type of tonic to each student below the height of 150cm to improve his height. If the cost of the tonic for each student comes out to be Rs. 55, how much amount of money is required? How many students are in the range of shortest height of the class? State whether true or false: There are 9 students in the class whose heights are in the range of 155-159 cm. Maximum height (in cm) of a student in the class is 17. There are 29 students in the class whose heights are in the range of 145-154 cm. Minimum height (in cm) of a student is the class is in the range of 140-144cms. The number of students in the class having their heights less than 150cm is 12. There are 14 students each of whom has height more than 154 cm.

A furniture manufacturing company plans to make two products: chairs and tables. From its available resources which consists of 400 square feet of teak wood and 450 man hours. It is known that to make a chair requires 5 square feet of wood and 10 man-hours and yields a profit of Rs. 45, while each table uses 20 square feet of wood and 25 man-hours and yields a profit of Rs. 80. How many items of each product should be produced by the company so that the profit is maximum?

A school collected Rs 2304 as fees from its students. If each student paid as many paise as there were students in the school, how many students were there in the school ?

A woman wishes to mix two types of foods in such a way that the vitamin contents of the mixture contain at least 8 units of vitamin A and at least 10 units of vitamin C. Food I contains 2 units/kg of vitamin A and 1 unit /kg of vitamin C. Food II contains 1 unit/kg of vitamin A and 2 unit/kg of vitamin C. The cost of food I is Rs. 50/kg and of food II is Rs. 70/kg. Find the minimum cost of such a mixture.

x articles are bought at Rs (x-8) each and (x-2) some other articles are bought at Rs (x-3) each. If the total cost of all these articles is Rs 76, how many articles of first kind were bought?