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How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
Answer & Solution
Correct Answer:
Option
B
$$\eqalign{
& {\text{P}} = {\text{Rs}}{\text{.}}\,{\text{450}} \cr
& {\text{S}}{\text{.I}}{\text{.}} = {\text{Rs}}{\text{. 81}} \cr
& {\text{R}} = {\text{4}}{\text{.5}}\% \cr
& {\text{Time}} \cr
& = \left( {\frac{{100 \times 81}}{{450 \times 4.5}}} \right){\text{years}} \cr
& = 4\,{\text{years}}{\text{}} \cr} $$
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