Answer:
6 dollars
Explanation:
Lets say the price of a single hamburger is some variable h, and the price of a drink is some variable d. We can make a system of equations with the prices:
5h+d=17
2h+6d=25
Now, you can multiply the first equation by 6 to leave you with a new system of equations:
30h+6d=102
2h+6d=25
Subtracting the second equation from the first, you are left with:
28h=77
h=2.75
Plugging this back into the first equation gives:
5(2.75)+d=17
13.75+d=17
d=3.25
Now that you know the price of an individual hamburger and drink, you know that the total combined cost is:
h+d=2.75+3.25=$6