The cost of 4kg onion, 3 kg wheat and 2kg rise in Rs. 60. The cost of 2kg onion, 4 kg wheat and 6 kg rice in Rs.90. The cost of 6kg onion, 2kg wheat and 3 kg rice is Rs.70. Find cost of each item per kg by matrix method.

Cost of 5 kg wheat is ₹91.50. (a) What will be the cost of 8 kg of wheat ?

The cost of 2 kg of apples and 1 kg of grapes on a day was found to be Rs. 160. After a month, the cost of 4 kg of apples and 2 kg of grapes is Rs. 300. Represent the situation algebraically.

The cost of 2kg of apples and 1kg of grapes on a day was found to be Rs 160. After a month the cost of 4kg of apples and 2kg of grapes is Rs300. Represent the situation algebrically and geometrically.

The cost of 2 kg of apples and 1 kg of grapes on a day was found to be Rs. 160. After a month, the coast of 4 kg of apples and 2 kg of grapes is Rs. 300. Represent the situation algebraically and geometrically.

5 chewing gum and 6 candies cost Rs. 9 and 3 chewing gum and 2 candies cost Rs. 5. Find the cost of 1 chewing gum and 1 candy.

4 chairs and 3 tables cost Rs. 2100 and 5 chairs and 2 tables cost Rs. 1750. Find the cost of one chair and one table separately.

Cost of 5 kg wheat is ₹91.50. (b) What quanitty of wheat can be purchased in ₹183 ?

There are two types of fertilizers F_1" and "F_2 consists of 10% nitrogen and 6% phosphoric acid and F_2 consists of 5% nitrogen and 10% phosphoric acid. After testing the soil conditions, a farmer finds that he needs atleast 14 kg of nitrogen and 14 kg of phosphoric acid for his crop. If F_1 costs Rs. 6/kg and F_2 costs Rs. 5 kg. Determine how much of each type fertilizer should be used so theat nutrient requirements are met at a minimum cost. What is the minimum cost? Also show graphically.