IOB LBO PYQ 2025 – Q32

Question:

The perimeter of a rectangle is 10 meters more than the perimeter of a square whose sides are 20 meters. If the ratio of length to breadth of the rectangle is 5:4 respectively, then find the area of the rectangle is what percentage of the area of square.

एक आयत का परिमाप 20 मीटर भुजा वाले वर्ग के परिमाप से 10 मीटर अधिक है। यदि आयत की लंबाई और चौड़ाई का अनुपात 5:4 है, तो आयत का क्षेत्रफल वर्ग के क्षेत्रफल का कितना प्रतिशत है?

Options:

  • (a) 150%
  • (b) 175%
  • (c) 100%
  • (d) 120%
  • (e) 125%
  • (a) 150%
  • (b) 175%
  • (c) 100%
  • (d) 120%
  • (e) 125%

Correct Answer: e)

Explanation:

Correct Answer: (e) 125%

Perimeter of square = 4 * 20 = 80m.
Perimeter of rectangle = 80 + 10 = 90m.
2(L + B) = 90 => L + B = 45m.
Ratio L:B = 5:4 => L = 25m, B = 20m.
Area of rectangle = 25 * 20 = 500 m².
Area of square = 20 * 20 = 400 m².
Percentage = (500 / 400) * 100 = 125%.

सही उत्तर: (e) 125%

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