Answer:
Cost of Drink is $1.8
Cost of Cheeseburger is $1.3
Explanation:
Let Cups of drink be x
Let Cheeseburgers be y
3x+4y= 10.6 ------> (i)
x+y=3.1 ------> (ii)
Now you can use either substitution method or elimination method. Up to you because the question hasn't specified. I am using substitution method.
(ii)-----> x=3.1-y ------- Put in (i)
3(3.1-y)+4y=10.6
9.3-3y+4y=10.6
y=10.6-9.3
y=1.3 -------- Put in (ii)
x=3.1-y
x=3.1-1.3
x=1.8
