Question

(13% din 4500) - (9% din 300) - (2% din 250) =?

Answer 1

$\frac{13}{100}*4500= \frac{4500*13}{100} \to \frac{58500}{100} =585 \\ \\ \frac{9}{100}*300= \frac{300*9}{100} \to \frac{2700}{100} \to27 \\ \\ \frac{2}{100} *250= \frac{250*2}{100} = \frac{500}{100} \to5 \\ \\ 585-27-5=\boxed{553}$

Answer 2

$\displaystyle \frac{13}{100} \cdot 4500= \frac{58500}{100} =585 \\ \\ \frac{9}{100} \cdot 300= \frac{2700}{100} =27 \\ \\ \frac{2}{100} \cdot 250= \frac{500}{100} =5 \\ \\ 585-27-5=558-5=553$