Question

Tick (✓) the correct answer:
?% of 400 = 60
(a) 6
(b) 12
(c) 15
(d) 20

Answer 1

(c) 15

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{required}\mathrm{number}\mathrm{be}\mathrm{x}.\mathrm{Then},\mathrm{we}\mathrm{have}: \\ x\%of400=60 \\ \Rightarrow \left(400\times \frac{x}{100}\right)=60 \\ \Rightarrow \frac{400x}{100}=60 \\ \Rightarrow 4x=60 \\ \Rightarrow x=\frac{60}{4} \\ \Rightarrow x=15 \end{gathered}$$