SBI PO – 2015 – 16 [IBPS CWE (RRB Officers), 2014]

Question: The numerical value of the area of a rectangular field is 90 times the numerical value of its breadth. If the perimeter of the field is 240 meter, what is the breadth of the field? [किसी आयताकार मैदान के क्षेत्रफल का संख्यात्मक मान, उसकी चौड़ाई के संख्यात्मक मान का 90 गुणा है. यदि मैदान की परिमिति 240 मीटर हो, तो मैदान की चौड़ाई कितनी है?] Ans. (c) 30 meter

(a) 60 meter (b) data inadequate (c) 30 meter (d) 20 meter (e) 15 meter

Detailed explanation: Given that the area of the numerical value of the area of a rectangular field is 90 times the numerical value of its breadth.

So, area = l × b = 90 × b. That is, l = 90

Given that perimeter = 2 (l + b) = 240. That is, l + b = 120

So, b = 120 – 90 = 30. Therefore, 30 meter is the answer.