At the college cafeteria,a large North-Indian thali costs Rs 425 and a small thali costs Rs215. The college students purchased 110 large and 154 small thalis on a day.How much money did the college cafeteria collect for large thalis and small thalis- separately and in total?

A firm has to transport 1200 packages using large vans which can carry 200 packages each and small vans which can take 80 packages each. The cost for engaging each large van is Rs.400 and each small vans is Rs.200 not more than Rs.3000 is to be spend on the job and the number of large vans can not exceed the number of small vans. formulate the problem as a LPP given that the objective is to minimise cost. also solve this LPP graphcially to find the minimum cost.

Rennae needs to purchase at least 20 boards for group art project. The poster boards come in the small size, which costs $30 per board, and the larger size., which costs $50 per board. Her allowance for purchasing poster boards is no more than $860 in total. She must purchase at least 5 small poster boards and 4 larger poster boards.If a represents the number small poster boards and b represents the number of large poster boards, which of the following system of inequalities represents the restrictions described?

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.