Question
eighteen months ago, a sum money of money was invested. Now the investment is worth RM 10 900. If the investment is extended for another 20 months, it will become RM 11 900. Find the original and simple interest rate that was offered
Answers
oobleck
P(1+18*r/1200) = 10900
P(20*r/1200) = 100
Now finish it off
P(20*r/1200) = 100
Now finish it off