Question

Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle. She wrote an equation to find the number of drinks she needs to sell to earn $100.. . 1.25x + 1.49 = 100. What error did Barbara make in writing the equation?

Answer 1

Barbara left out a variable when she wrote the equation. She needed a variable after the $1.49. It could of been 1.49y.