Question

If the SI on a certain money is 4 times the principal anc interest p.a. equals number of years, then the rate of interest
is​

Answer 1

Step-by-step explanation:

Let the principal be P.

Rate of interest be R%

According to the question, Time=R

Simple interest =94P.

SI=100(PTR)

⇒94P=100(PTR)

⇒94P=100(P×R×R)

⇒94P=100(P×R2)

⇒94=100R2

⇒R2=100×94

⇒R=10×32=320

Therefore, rate of interest is 320% or  632%.

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