Question

P=rd.12000,a=rs16500,t=2.5 years.rate per cent annual simple interest will be

Answer 1

a=p+ptr/100
a-p=ptr/100
16500-12000=2500=12000*2.5*r/100
2500=12*25*r
2500/25=12r
100/12=r
25/3=r
rate of interest is 8( 1/3)

Answer 2

i hope this will usful to u