Write an equation and solve. At the local warehouse where Billy buys supplies for the concession stand, a case of energy drinks costs twice as much as a case of water and a case of chips together. If a case of energy drinks costs $18 and a case of water costs $5, what is the cost of a case of chips?

Question

tyteen4a03 · Answer

Let the cost of a case of chips be x. The equation you're looking for is

2(5+x) = 18
The 5 stands for the cost for a case of water, and 18 stands for the cost for a case of energy drinks.

anonymous · Answer

let the case of energy drinks = x
let the case of water = y
case of chips together = z
x = (y+z)*2
substitute the values

anonymous · Answer

I understand all that, but what is the answer?

tyteen4a03 · Answer

@HorseCrazyGirlForever The answer is given at my post.

anonymous · Answer

18=(5+z)2
z=4

anonymous · Answer

18?