First off, hello, hope you are having a good weekend.
So for this question I am suppose to solve for it using a 3 x 4 matrix, so using the information below I would need 3 correct equations (AX + BY +CZ = _), which is my biggest problem.
A farmer needs 500 kg of fertilizer that is 50% nitrogen, 15% phosphorus, and 35% potassium. Three different brands are available. Their compositions are shown below. How many kilograms of each brand should he use?
Brand X: 40% nitrogen, 20% phosphorus, 40% potassium
Brand Y: 50% nitrogen, 20% phosphorus, 30% potassium
Brand Z: 60% nitrogen, 40% potassium
Any help is appreciated