A) \[2\frac{1}{2}\]
B) \[1\frac{1}{2}\]
C) \[2\frac{1}{3}\]
D) \[1\frac{1}{3}\]
Correct Answer: B
Solution :
Rate \[=5%\] per half-yearly Let time \[=2n\] half years =n years Then \[8000{{\left( 1+\frac{5}{100} \right)}^{2n}}=9261\] \[\Rightarrow \] \[{{\left( \frac{21}{20} \right)}^{2n}}=\frac{9261}{8000}={{\left( \frac{21}{20} \right)}^{3}}\] \[\therefore \] \[2n=3\] or n
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