Question

fill in the missing number. \boxed{} % of 90 = 18

Explanation:

Step1: Let the missing percentage be \( x \). The equation is \( \frac{x}{100} \times 90 = 18 \)

Step2: Solve for \( x \), first simplify the left side: \( \frac{90x}{100} = 18 \), then multiply both sides by 100: \( 90x = 1800 \), then divide both sides by 90: \( x = \frac{1800}{90} = 20 \)

Answer:

20