Question

at what rate of interest will the amount at thrice in 25 years​

Answer 1

Let the principal be x

Amount =3x

SI=2x

T=25 years

SI=(P*R*T) /100

R=(SI*100)/(P*T)

R=(2x*100)/(x*25)

R=2*100/25

R=8 % per annum

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