Question

Simple interest on a certain sum is 4/9, of the sum. Find the rate per cent and time if both
are numerically equal.​

Answer 1

Step-by-step explanation:

I = 4/9 P

r = n

I = P x n x r

100

4 P = P x n x n

9 100

4 x 100 x P = n x n

9 x P

400 = n²

9

√400 = n

√9

20/3 = n

6.66 = n

Rate per cent = 6.66%

Time = 6.66