Optional extension A dealer spends $$600$ on identical items at $$x$ each and plans to sell each

Question

Optional extension A dealer spends $$600$ on identical items at $$x$ each and plans to sell each for $$(x+5)$. After selling all except 20 items, the receipts equal the original $$600$.

Accepted Answer

(i) $\dfrac{600}{x}$ bought, $\dfrac{600}{x}-20$ sold (ii) $x^2+5x-150=0$ (iii) $$10$ (iv) $$15$ (v) $40\%$.

Dealer profit from a batch of goods

Dealer profit from a batch of goods

Solution:

Solution locked