Question

Find the time in which a sum of money gets doubled at the interest rate of 8% per annum.​

Answer 1

Answer:

12.5 years

Step-by-step explanation:

assume principle =100

sum of money gets doubled means=200

so intersest=200-100=100

formula=PTR/100

$\frac{100 \times t \times 8}{100} = 100$

8t=100

t=12.5 years

Answer 2

Answer:

0 years.

Step-by-step explanation:

Let the principal be x

So, Amount = Double of principal = 2x

Rate of interest = 8%

Formula :  

 

So, a sum of money double itself at 8% p.a in 10 years.

Step-by-step explanation: