Let rate = R% per annum and Time = T years. Then,
I. P.W. = 100 * Amount / 100 + (R*T) = 100 * T.D. / R * T
II. T.D. = (P.W.)* R * T / 100 = Amount * R * T / 100 + (R * T)
III. Sum = (S.I.) * (T.D.) / (S.I.) - (T.D.)
IV. (S.I.) - (T.D.) = S.I on T.D.
V. When the sum is put at compound interest, then P.W. = Amount / [1+R/100]T;
