Answer:
E: 22%
Step-by-step explanation:
Area of the whole page:
30 × 40 = 1200cm²
Area of inner page (excluding margins):
(30-4) × (40-4) = 26 × 36
= 936cm²
Area of margins:
1200 - 936 = 264
To find percentage: [tex]\frac{264}{1200}[/tex] × 100 = 22%
