Question
In a certain time, the ratio of a certain principal and interest obtained from it are in the ratio 10 : 3 at 10% interest per annum. The number of years for which the money was invested is = ?
Answer: Option B
According to the question,
Principal
Interest
10
3
$$\eqalign{
& {\text{Rate }}\% {\text{ = 10}}\% \cr
& {\text{Time = }}\frac{3}{{10}} \times \frac{{100}}{{10}} \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\, = 3\,{\text{years}} \cr} $$
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According to the question,
Principal
Interest
10
3
$$\eqalign{
& {\text{Rate }}\% {\text{ = 10}}\% \cr
& {\text{Time = }}\frac{3}{{10}} \times \frac{{100}}{{10}} \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\, = 3\,{\text{years}} \cr} $$
Was this answer helpful ?
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