A) \[\sqrt{324}+90=60%\] of \[60+20\]
B) \[5{}^{1}/{}_{2}\] of \[240=150%\] of 880
C) \[35%\]of\[30=10.0\]
D) 100 metres is 20% of \[1\,\,km\]
Correct Answer: B
Solution :
(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 \[150%\,\,880=\frac{\overset{3}{\mathop{\cancel{150}}}\,}{\cancel{\underset{2}{\mathop{100}}\,}}\times 880=1320\]
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