Lupe and her friends spent $20 on snack mix and water. They bought x bags of snack mix for $2.50 each and y bottles of water for $1.25 each. If Lupe and her friends bought a total of 11 items, how many bags of snack mix and bottles of water did they buy? bags of snack mix: ?
bottles of water: ?

7.5 bags of snack mix, 3.5 bottles of water.

Step-by-step explanation:

This can be found by looking at a system of equations. Setting up our system, we know that they bought 11 items, and that there was a total of $20. Our system would be this:

We can then solve for a variable in any equation. Let's solve for x in the second equation.

Now, we substitute into the other equation.

We now know both amounts; they bought 7.5 bags of snack mix and 3.5 bottles of water.

answer: options

step-by-step explanation: