Question

Decrease the following quantities by $10\%9000\mathrm{scooters}$

Answer 1

Percentage of a given number

First find $10$ percent of $9000$ then subtract it from $9000$

$10\%$ of $9000$

$$\begin{gathered} =\frac{10}{100}\times 9000 \\ =10\times 90 \\ =900 \end{gathered}$$

Now subtract $900$ from $9000$

$$\begin{gathered} =9000-900 \\ =8100 \end{gathered}$$

Hence, $8100$ is the required answer after reducing $9000$ by $10\%$