1
S.I. = (P x R x T)/100 where R is rate, T is time, P is Original sum and S.I. is simple interest. 800x100 = P x R x T P = 80000/(5x7) = 80000/35 = 2285.71 So, the original sum is Rs 2285.71
The sum of 1 + 8 is 9.
the sum is the answer to an addition problem e.g.4+5=9 9 is the sum
The sum of 8, 11 and 9 is 28.
4 and 5 have the sum of 9 and the product of 20.