Question

At a concession stand, one person purchased 3 drinks and 3 soft pretzels for a total of $9.00. Another person purchased 4 drinks and 2 soft pretzels for a total of 8.50. What was the price of one soft pretzel

Answer 1

First we define the variables:
 x: price in $ for each drink
 y: price in $ for each soft pretzel.
 We write the system of equations:
 3x + 3y = 9
 4x + 2y = 8.50
 We solve the system:
 x = 1.25 $
 y = 1.75 $
 (See attached image)
 Answer: 
 The price of one soft pretzel is: 
 y = 1.75 $