Question: Mark (✓) against the correct answer:
What per cent of $\frac{2}{9}$ is $\frac{1}{45} ?$
(a) $2.5 \%$
(b) $5 \%$
(c) $7.5 \%$
(d) $10 \%$
Solution:
(d) $10 \%$
Required percentage $=\left(\frac{1}{45} \times \frac{9}{2} \times 100\right) \%=10 \%$
