A) 5 yr
B) 2 yr
C) 3 yr
D) 4 yr
Correct Answer: B
Solution :
Let Time = T yr \[\therefore \] \[2420=2000{{\left( 1+\frac{10}{100} \right)}^{T}}\] \[\Rightarrow \] \[\frac{2420}{2000}={{\left( \frac{11}{10} \right)}^{T}}\] \[\Rightarrow \] \[{{\left( \frac{11}{10} \right)}^{T}}=\frac{121}{100}={{\left( \frac{11}{10} \right)}^{2}}\]\[\Rightarrow \]\[T=2\,\,\text{yr}\]You need to login to perform this action.
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