Examples of foods that contain vitamin A are-

Example of food is-

Examples of food sources that contain calcium are-

A diet is to contain at least 80 units of vitamin A and 100 units of minerals. Two food F1 and F2 are available. Food F1 costs Rs. 4 per unit food and F2 costs Rs. 6 per unit. One unit of food F1 contains 3 units of vitamin A and 4 units of minerals. One unit of food F2 contains 6 units of vitamin A and 3 units of minerals. Formulate this-as linear programming problem. Find the minimum cost for diet that consists of mixture of these two foods and also meets the minimal nutritional requirements.

An example of water insoluble vitamin is

Give five examples of expressions containing one variable and five examples of expression containing two variables.

What are trophic levels? Give an example of food chain and state the different trophic levels In it.