The difference of two numbers is 20% of the larger number. If the smaller number is 12, the larger one is · ABC26GN1660
Subject: General Aptitude · Chapter: Problems on Numbers
The difference of two numbers is 20\% of the larger number. If the smaller number is 12, the larger one is
(a)15
(b)16
(c)18
(d)20
Answer
No answer key was printed for this question.
Explanation
Let the number be $x$. Then, $x-12=20 \%$ of $x \Leftrightarrow x-\frac{x}{5}=12$ $$\Leftrightarrow \frac{4 x}{5}=12 \Leftrightarrow x=\left(\frac{12 \times 5}{4}\right)=15 .$$
Explanation as extracted from the printed page; notation may be imperfect.