Question

Use any SYSTEMS method you like to solve this work problem.

MUST WRITE EQUATIONS.

Nina can buy 3 sandwiches and 4 iced teas for $10.41. She can buy 1 sandwich and 3 iced teas for $5.12. Find the cost for one sandwich and one iced tea. [Answer must be a sentence with a proper label.]

Answer 1

Answer: s=1.27 t=1.65

Step-by-step explanation:

`3s + 4t = 10.41 \\ s + 3t = 5.12`

Times the bottom equation by 3 to eliminate the x.

`3s + 12t = 15.36 \\ 3s + 4t = 10.41 \\ 3t = 4.95 \\ t = 1.65`

`3s + 6.6 = 10.41 \\ 3s = 3.81 \\ s = 1.27`

You subsititute to find s by putting it into one of the equations