Question

If x% of 2000 = 600, then x =

(a) 60
(b) 30
(c) 40
(d) 50

Answer 1

$$\begin{gathered} x\%\mathrm{of}2000=600 \\ \Rightarrow \frac{x}{100}\times 2000=600 \\ \Rightarrow 20x=600 \\ \Rightarrow x=\frac{600}{20} \\ \Rightarrow x=30 \end{gathered}$$

Hence, the correct option is (b).