Question

The simple interest for a certain number of years, same as the rate percentage of the interest, is equal to the sum itself. The number of years is equal to

a) 5
b) 1
c) 8
d) 10
give explanation​

Answer 1

Answer:

Option (d); 10 is correct.

Step-by-step Solution:

Let the sum P is invested for t years at a rate of r% per year. Let I be the interest gained in t years. Then

I = Ptr / 100

In this problem, I = P and t = r

Then we get

P = Ptt / 100

or, t² = 100

or, t = 10 , since time cannot be measured in negative value.

Therefore, the number of years = 10

Answer 2

Answer:

Step-by-step explanation: