If Rs. 25000 is borrowed at 9%  interest p.a, then the amount paid at the end of 3 years is

$T=3years,R=9\%$

Simple interest (I) $=\frac{P\times T\times R}{100}$

$=\frac{25000\times 3\times 9}{100}$

$=250\times 3\times 9=Rs.6750$

Amount paid at the end of 3 years

$=P+I=Rs.25000+Rs.6750=Rs.31750$