At what rate percent per annum with simple interest will a sum of money double in 12.5 years?
Let the Principal be Rs.P
Amount after 12.5 years = Rs.2P
Interest = Rs.2P - Rs.P = Rs.P
Let the rate of interest be R%
$$\dfrac{P\times R\times12.5}{100} = P$$
=> $$R = \dfrac{100}{12.5} = 8$$%
Therefore, Rate of interest = 8%.
Create a FREE account and get:
Detailed syllabus & Topic-wise Weightage
By proceeding you agree to create your account
Free CAT Syllabus PDF will be sent to your email address soon !!!
