Question

the simple interest on a certain sum for 3 years at 10% per annum is rupees 829.50 find the sum

Answer 1

let the sum = principal =P
time =T= 3 yrs
rate of interest = R= 10%
simple interest =I= 829.50

I = PTR/100
P = (100*I)/(TR)
P =(100*829.50)/(3*10)
=82950/30
=Rs2765
Principal = P = Rs 2765

Answer 2

Let the sum be P
Simple Interest, S.I= Rs.829.50
Time,T = 3 years
Rate of interest,R = 10%

S.I = PRT/100
829.50 = P X 10 X 3 /100
82950/100 = P X 10 X 3/100
82950 = 30P
P = 2765

∴ The sum is Rs 2765.