To answer this, we can use as 1 Twinkie as x, and a cupcake as y. First, we can make an equation. Since 3 Twinkie’s and 1 cupcake add up to 750 calories, we have: 3x+y=750. Since a cupcake has twice the amount of calories, then 2x=y. Next, we can substitute the y, and we get: 3x+2x=750 Combining like terms 5x=750 Divide by 5 on both sides x = 150 Since a cupcake has twice the amount of calories than a Twinkie, then one Twinkie is 150*2=300.
