Question

Person A buys 12 granola bars and 7 cups of yogurt for $15.50. Person B buys 6 granola bars and 11 cups of yogurt for $11.50. Find the cost of each item

Answer 1

By trial and error, I got it first correctly. The granola bars cost $1 each and the yogurt is $.50 per cup. By plugging this in to each equation, you'll see that 12 granola bars equals $12, and 7 cups of yogurt equals $3.50, for a total of $15.50. The second account would produce $6 + $5.50, which equals $11.50.