Answer:
$53.5
Step-by-step explanation:
In this problem, you need to find the price of a single hamburger and a single drink. Sadly, you only have the total cost. Thus, there is no way to solve the problem...
Jk
You just need some math. Let's represent hamburgers as x and Drinks as y. You get two equations from customer one.
Next, we need to isolate one of the variables. Let's start with the easiest equation, which is the first.
- x+y=6
- x=6-y. (We subtracted y by both sides to isolate the x variable.)
Now, we know what x equals. Let's plug that into the next equation and solve.
- 2x+4y=$13.00 (Original equation.)
- 2(6-y)+4y=$13 (Substituted x)
- 12-2y+4y=$13 (Multiplied 2 by 6-y)
- 2y=$1 (Isolated the variable)
- y= $0.5 (Reduced.)
Now we know a drink costs $0.50, which is 50 cents. Now, let's use that information to solve the first problem.
- x+y=6
- x+0.5=6
- x=$5.5
Thus, a hamburger costs $5.5. Now, let's solve for the problem.
- 8y+9x=?
- 8(0.5)+9(5.5)
- 4+49.5=53.5
Therefore, you expect to pay $53.5
