Writing an Inequality

Question

Mr. Chan wants to sell some or all of his stocks in a company. He purchased 80 shares for $0.50 last month and the shares are now worth $4.50 each. Write an inequality which describes how much profit (p) Mr. Chan can make selling his shares

Answer 1

Let S = shares sold.

S ≤ 80.

Since current profit = $4.50 - $0.50 = $4,

$4*S ≤ $4 * 80 = $320.