Question

At what rate of simple interest will a sum of money double itself in 20 years.​

Answer 1

Answer:

The rate of interest is 5%

Step-by-step explanation:

I =Prt/100

p= x (supposedly)

then I is x ( according to question )

r =?

t=20 years

I=prt/100

x=x*r*20/100 , 1/r = 1/5 , r=5%

Answer 2

Answer:

Hence the required rate is 5%

refer to the attachment please!!!