Answer:
The answer is "[tex]\bold{E = \$ 5.00S+\$ 3P \ \ \ and \ \ \ E = \$ 30}[/tex]".
Explanation:
Assume that person-person C is still there. He purchases 2 things – salad (S) and pizza (P). Salad (PS) cost five dollars and pizza cost(Pp) three dollars. Let E is the cumulative dollar amount spent on both S and P by Individual C. Look for a cumulative sum of money he pays, represented by E.
Absolute spending equals the amount of good S expenses and good P expenses.
[tex]\to E = \$ 5.00S+\$ 3P[/tex]
In E and S, compose the P equation.
[tex]E=\$ 5.00 S+\$ 3P \\\\3P=E-\$ 5.00 S \\\\P= \frac{E - \$ 5.00S}{\$ 3.00}[/tex]
Therefore, the required equation is:
[tex]P= \frac{E - \$ 5.00S}{\$ 3.00}[/tex]
Person C will have $30 to spend on the goods E = $30.