2023 · Q85
The plinth of a house has an area of 200 square metres. It is rectangular in shape and its length and breadth are in the ratio 2 : 1. The owner of the house extends the terrace by 1 m on each side. What is the percentage of area that has increased in the terrace relative to the plinth?
Elementary MathematicsMensuration
- A40%
- B32%
- C20%
- D15.5%
Explanation
With length : breadth = 2 : 1 and area 200, the plinth is 20 m × 10 m. Extending the terrace 1 m on each side gives 22 m × 12 m = 264 sq m. The increase is 64/200 = 32% (B).