How long will it take a sum of money invested at 6 % p.a. S.I. to increase its value by 60%?	Choices
A) 11 years	B) 12 years	C) 10 years	D) 15 years	E) 8 years
Sol.   Let the sum be x. Then, S.I. = 60% of x = 3x/5; Rate = 6%.   âˆ´ Time = [100 * 3x/5 * 1/x*6] = 10 years   Answer 10 years
<result>C</result>
How long will it take a sum of money invested at 6 % p.a. S.I. to increase its value by 60%?