Radha invests certain sums in scheme A (for 6 years) and B (for 5 years) both offering simple interest. The sum invested in scheme B was `25%` less than that in scheme A. The interests received from both the schemes are equal. If the interest offered by scheme A is at `10%` per annum what is the rate of interest (per annum) offered by scheme B?

Options

A. `12%`
B. `20%`
C. `16%`
D. `15%`

Answer

C