A sum of money at simple interest amounts to Tk. 815 in 3 years and to Tk. 854 in 4 years. The sum is:
সমাধান
সঠিক উত্তর: Option C
principle+4 years interest = 854 tk principle+3 years interest= 815 tk so, interest of 1 year= 39 tk so, 3 years interest=39 x3=117 tk so,principle=(815-117) tk=698 tk