Question

please answer to this question​

Answer 1

Step-by-step explanation:

Let sum = X. Then S.I = 16x/25

Let rate = R% and Time = R years.

Therefore, (x * R * R)/100 = 16x/25 => R = 40/5 = 8

Therefore, Rate = 8% and Time = 8 years.

Answer 2

Answer:

Step-by-step explanation:

Let the sum = x

rate percent = time = Let r

Simple interest on certain sum = 16x/25

According to the question:-

16x/25 =x*r*r/100

=>16x/25=xr^2/100

=>16/25 = xr^2/100x

=>16/25=r^2/100

=>4/5 = r/10

=>8 =r

Time period = 8 years

Rate percent = 8%

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