An animal feed is to be made from three ingredients

An animal feed is to be made from three ingredients and . Determine how many units of each ingredient are needed to make a feed that supplies units of fiber, units of fat, and units of protein, given that unit of each ingredient provides the numbers of units shown in the table below. The table states, for example, that a unit of provides units of fiber, units of fat, and 20 units of protein. (10 marks)

Units of Fiber
Units of Fat
Units of Protein

Answer: , D = = 10880

D(X) = = 268560 D(Y) = = 137040

D(Z) = = 471920

Using Cramer’s method: X = Y =

Z =