A person borrowed a sum of Rs.20000 at a rate of 20% p.a compounded annually for three years. But after two years he paid Rs.12800 and after 3rd year he cleared the remaining balance. How much did he pay at the end of the 3rd year?
Rs.18200
Rs 18700
Rs.19200
None of these
P = 20000
R = 20 %
Amount after 2 years = P [1+r/100]2
20000 [ 1+20/100]2
= 28800
He paid 12800 so remaining amount 28800 – 12800
= 16000
Amount after 3 years = 16000 [ 1+20/100]
=16000 x 6/5
=96000/5
= 19200 Rs.