If the ratio of principal and the simple interest for 5 years is 10 : 7, then the rate of interest (per annum) is:

15% 20% 10% 14%

14%

Ratio of principal and the simple interest for 5 years is 10 : 7 Let principal = 10P  &  Simple interest = 7P We know , Simple interest = \(\frac{Principal ×Rate × Time }{100}\) 7P = \(\frac{10P×Rate × 5 }{100}\) Rate = 14%