If simple interest for 6 years is equal to 30%of the principal, it will be equal to the principal after​

Answers (1)

Let Principal be P

SI after 6 years is 0.3P (30% of Principal)

Using SI formula to find rate of Interest

SI=PxRxT/100

0.3P=PxRx6/100

R=5%

Now R=5%, Principal =P and SI=P(Given that SI is equal to Principal)

SI=PxRxT/100

P=Px5xT/100

T=20

Hence after 20 years SI is equal to principal

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