Question

Julio is buying a car. He makes a down payment of 20% and he makes arrangements to finance the remaining $14,000. What is the dollar amount of Julio's down payment?

Answer 1

well, we know the downpayment is 20%, so 100% - 20% = 80%, that's the remaining amount, which we know is 14000 bucks, let's say the 20% is really "x" bucks, so

`\begin{array}{ccll} amount&\%\\ \cline{1-2} 14000 & 80\\ x& 20 \end{array} \implies \cfrac{14000}{x}~~=~~\cfrac{80}{20} \\\\\\ \cfrac{ 14000 }{ x } ~~=~~ 4\implies 14000=4x\implies \cfrac{14000}{4}=x\implies 3500=x`