In order to solve this you need to do the original price - the sold price and figure the difference.
90-180= <span>£</span>18
therefore making it 20% of a profit sale.
C= the price of a cheeseburger and l = the price of a lemonade:

Divide the second equation by -2 to begin the process of solving by elimination:

Now that we have c, 4, we can plug it in to one of the equations to find l:

So, each cheeseburger is $4 and each lemonade is $1. The final answer is:
1 cheeseburger and 2 cups of lemonade would cost $6.
85 x 0.20= 17%
I hope that helped
Answer:
x = 0
Step-by-step explanation:
First we set up our equation. From the picture we can see that:
11 + x + 1 = 2x + 12
Now we can gather our like terms:
x + 12 = 2x + 12
Lets subtract x from both sides to isolate the x on the left:
12 = x + 12
Next we subtract 12 from both sides
x = 0
Check the answer
11 + 0 + 1 = 2(0) + 12
12 = 0 + 12
12 = 12
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