You and a friend go to a mexican restaurant. you order 2 tacos and 3 enchiladas and your friend orders 3 tacos and 5 enchiladas. one bill was $7.80 plus tax and the other bill was $12.70 plus tax. how much was each taco and each enchilada?
For this case, the first thing we must do is define variables. We have then: x: cost of tacos y: cost of enchiladas. We write the system of equations: 2x + 3y = 7.80 3x + 5y = 12.70 Solving the system we have: x = 0.9 $ y = 2 $ Answer: each taco and each enchilada was: x = 0.9 $ y = 2 $
