Simple intrest

Author jayendra asked on 2019-07-22 13:26:00

THE RATE PERCENT PER ANNUM WHICH WHOULD GIVE DIFFFENCE IN AMOUNT OF INTREEST  EQUAL  TO  RS 20 FOR RS 1200  IN 3 YEARS AND FOR  RS 800 IN 4 YEARS

SI1= P*R*T/100=1200*R*3/100=36R

SI2 = P*R*T/100=800*R*4/100 =32R

36R-32R= 20

4R=20

R=5