Question

At a restaurant, you eat 2 taco salads and drink 2 glasses of ice tea. Your friend eats 1 taco salad and drinks 1 glass of ice tea. The restaurant charges you $11 and your friend $6.50. Can you determine the prices of taco salads and ice tea?

Answer 1

No, because the information that you have given is contradicting itself:


`2x+2y=11\\(2x)/(2)+(2y)/(2)=(11)/(2)\\x+y=5.50\\x+y=6.50\\5.50 \\eq 6.50`