Question

simple interest on a certain sum is 9 by 16 of the sum find the rate percent and the time of both r memorially
equal​

Answer 1

Answer:

The rate is 7.5% and time is 7.5 years.

Step-by-step explanation:

We know,

SI=PRT/100

So,

=>PRT/100=9*P/16

=>RT/100=9/16

It is given that R and T are numerically equal.

So,

Let R be x

=>x*x/100=9/16

=>x^2/100=9/16

=>(x/10)^2=(3/4)^2

=>x/10=0.75

=> x=7.5