A drink and sandwich cost 4.25. The sandwich cost 1.75 more than the drink. How much does the sandwich cost?

Question

Drink and sandwich cost 4.25

Sandwich is 1.75 more than the drink

How much is the sandwich?

Answer 1

Hello,

 

Here is a simple solution. Let's assume that the cost of the sandwich is x and cost of the drink is y. The following system of two linear equations will provide a solution for both unknown variables x and y:

 

x+y=4.25

x-y=1.75

 

This can be easily solved either manually, or using online System of Linear Equations Solver (http://examn8.com/SystemOfEquations.aspx)

 

The answer is:

 

x= 3 (cost of the sandwich)

y=1.25 (cost of the drink)

 

Hope this will help.