ABC26GN1673 · Problems on Numbers

Subject: General Aptitude · Chapter: Problems on Numbers · Exam: 2007 · Marks: · Difficulty:

Find the whole number which when increased by 20 is equal to 69 times the reciprocal of the number.

(a)2.5

(b)3

(c)5

(d)7

Answer

Answer (as printed): B

Explanation

Let the required number be $x$. Then, $x+20=\frac{69}{x} \Leftrightarrow x^{2}+20 x-69=0$

Explanation as extracted from the printed page; notation may be imperfect.