Question

On increasing each side of a square by 50%, the ratio of the area of new square formed and the given square will be

• A. 9 : 5
• B. 9 : 3.5
• C. 9 : 7
• D. 9 : 4

Answer 1

Answer:

D. 9 : 4

Side of the given square = x cm (let)

Side of new square $=\frac{3x}{2}$cm (let)

Required ratio of areas $=(\frac{3x}{2})^2:x^2=\frac{9x^2}{4}:x^2$

$=9:4$