ABC26GN2326 · Percentage
Subject: General Aptitude · Chapter: Percentage · Exam: · Marks: · Difficulty:
If 20\% of $a=b$, then $b \%$ of 20 is the same as
(a)4\% of $a$
(b)5\% of a
(c)20\% of a
(d)None of these
Answer
Explanation
20\% of $a=b \Rightarrow \frac{20}{100} a=b$. $$\begin{aligned} \therefore b \% \text { of } 20 & =\left(\frac{b}{100} \times 20\right)=\left(\frac{20}{100} a \times \frac{1}{100} \times 20\right) \\ & =\frac{4}{100} a=4 \% \text { of } a . \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
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