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In a certain years, a sum of money is doubled itself at `6(1)/(4)`simple interest per annum, then the required time will be(एक निश्तित राशि `6 वार्षिक साधारण बियाज पर कितने समय में दोगुनी हो जाएगी )
A. `12(1)/(2)` years
B. 8 years
C. `10(2)/(3)` years
D. 16 years

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(d) Let Principle(मूलधन)=P
Amount(मिश्रधन)=2P
Simple interest(साधारण बियाज)=2P-P=P
Using formula `SI=(PxxRxxT)/(100)`
`P=(PxxRxxT)/(100), p=(Pxx25xxT)/(4xx100)`

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