A sum of money doubled in 10 years. The rate of interest per annum is
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Step-by-step explanation:
the rate of interest per annum is 2
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Let the principal be x
- Time = 10 years
Amount after 10 years gets doubled
So amount = 2x
- Simple interest = amount - principal
- Simple interest = 2x - x = x
- Rate per annum = SI × 100 / P × T
- = x × 100 / x × 10
- 100x/ 10x = 10
So rate per annum is 10%
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