Question

Ella buys three burgers and two sodas for $3.20, and Sarah buys two burgers and a soda for $2.00. How much money does a burger cost?

Write and solve a system of linear equations.

I dont know the answer please help me.

Answer 1

Subtract $2.00 from $3.20 and that equals $1.20. Then, divide $1.20 by 2 and that gets you $0.60 and that's your answer.

Answer 2

When a problem like this is being done, it is easier to find the difference first and then break it down to find the answer. In this case when you subtract $3.20 and $2.00 you can figure out the difference in what she spent and then find the cost of each burger.