Answer:
The equation is [tex]85=2x[/tex]
Step-by-step explanation:
Given,
Price of one cup of lemonade = $2
Total earning = $85
Number of cups = x
Here we have to find out the equation for earning $85.
Total earning is product of number of cups Christopher sold to price of each cup of lemonade.
The equation can be written as;
Total earning = Price of one cup of lemonade X Number of cups
[tex]\therefore85=2\times x[/tex]
[tex]85=2x\\x=\frac{85}{2}=42.5[/tex]
Hence Christopher has to sold 42 and a half cup of lemonade in order to make $85.
And the equation is [tex]85=2x[/tex]