Simple interest = (18000 * 4 * 12)/100 = Rs. 8640
Amount = P + I = 18000 + 8640 = Rs. 26640
What amount does Kiran get if he invests Rs. 18000 at 12% p.a. simple interest for four years?

1) 29893
2) 26640
3) 29989
4) 28800
5) 29883