A certain sum is invested for 2 years in scheme M at 20% p.a. compound interest (compounded annually), Same sum is also invested for the same period in scheme N at k% p.a. simple interest. The interest earned from scheme M is twice of that earned from scheme N. What is the value of k?
A certain sum is invested for 2 years in scheme M at 20% p.a. compound interest (compounded annually), Same sum is also invested for the same period in scheme N at k% p.a. simple interest. The interest earned from scheme M is twice of that earned from scheme N. What is the value of k? Correct Answer 11
Interest earned in scheme M =
P1 + 201002 - 1 = 11P25
Interest earned in scheme N =
P x k x 2100 = Pk50
Now, from the given data,
11P25 = 2 x Pk50
k = 11