For breakfast, Randy had two Egg McMuffins and a hash brown, to taling 750 calories . Jack only had on e Egg McMuffin and a hash brown, totaling 450 calori es. How many calories are in each item?
Let us assign variables. Let x = egg mcmuffins Let y = hash brown
Randy had: 2x + y = 750
Jack had x + y = 450
Using systems of linear equation, we can get the value for x and y by elimination. Subtract the equations. 2x + y = 750 x + y = 450 -------------- x = 300
Get y x + y = 450 300 + y = 450 y = 150.
So there are 300 calories for McMuffins and 150 calories for hash brown.
