Question

what is 90% of $40?
$

Explanation:

Step1: Convert percentage to decimal

To find a percentage of a number, we first convert the percentage to a decimal. 90% is equivalent to $0.9$ (since $90\%=\frac{90}{100} = 0.9$).

Step2: Multiply the decimal by the number

We need to find 90% of $40$, so we multiply $0.9$ by $40$. The calculation is $0.9\times40 = 36$.

Answer:

$36$