• # question_answer 20) Which of the following statements is true? A)  $\sqrt{324}+90=60%$ of $60+20$B) $5{}^{1}/{}_{2}$ of $240=150%$ of 880C)  $35%$of$30=10.0$D)  100 metres is 20% of $1\,\,km$

(b) $5\frac{1}{2}$ of $12240=5\frac{1}{2}\times 240$ ('of means into i.e. multiplication) $=\frac{11}{2}\times 240=1320;$ Also $150%\,\,880=\frac{\overset{3}{\mathop{\cancel{150}}}\,}{\cancel{\underset{2}{\mathop{100}}\,}}\times 880=1320$