How many years will it take John’s investment to double at a simple interest rate of 4% per annum.  Answers.
A) 20  B) 30  C) 15  D) 25  E) 19
P = (P*4*R)/100   100P = P*4*R   100 = 4R   Therefore R = 25   25 = 25 Years
<result>D</result>
How many years will it take John’s investment to double at a simple interest rate of 4% per annum.