Question

A sum of money at compoud interest amount to rs.6600 in 1 year and to rs.7986in 3 years. Find the sum and rate of interest

Answer 1

amount in 3 years =(principal+interest for 3 years )=RS 7986 amount in1 years =(principal+ interest for 1 years)RS 6600 interest for 2 years =rs (7986-6600)=rs 1368 interest for 1 year =rs 1368upon 2 interest for 1 year =RS 1368 ×1upon 2 =684 principal = rs (6600-684 )rs 5416 and rate si×100upon p×t

Answer 2

I think this is the answer.