A sum of money at simple interest becomes 3 times of itself in 8 years. (i) How many times it will become in 20 years? (ii) Find the Interest rate also.

6 times; 25% 7 times; 20% 6 times; 20% 5 times; 25%

6 times; 25%

P : A = 1 : 3 Interest = 2 rate = \(\frac{2}{8}\) x 100 = 25%   Interest = \(\frac{25 x 20}{100}\)  = 5 A = 6 times P