A certain sum was invested on simple interest. The amount to which it had grown in five years was `1 1/4` times the amount to which it had grown in three years. The percentage rate of interest was: एक निश्चित राशि साधारण ब्याज पर निवेश की गयी | पांच वर्षों में यह बढ़कर जो राशि बनी वह तीन वर्षों में इसमें हुई वृद्धि का `1 1/4` गुना है | ब्याज की दर है :

Options

A. 0.1
B. 0.2
C. 0.25
D. 0.15

Answer

B