A) (100/11)%
B) 50%
C) 10%
D) (200/11)%
Correct Answer: D
Solution :
[d] According to the question, |
\[1-\left( \frac{1}{4}+\frac{1}{5} \right)=1-\frac{9}{20}=\frac{11}{20}\] |
Answer he found \[=0.45=\frac{45}{100}=\frac{9}{20}\] |
\[\therefore \] Required error percentage |
\[=\frac{\frac{11}{20}-\frac{9}{20}}{\frac{11}{20}}\times 100=\frac{\frac{2}{20}}{\frac{11}{20}}\times 100\] |
\[=\frac{2}{11}\times 100=\frac{200}{11}%\] |
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