Question

A borrowed sum rs 4000 amounts to rs 5400 in 5 years.How much will rs 5000 amount to in 3 years at the same rate

Answer 1

considering simple interest calculation

interest earned in 5 years is 1400
so

i=prt
1400=4000*5*r
r=0.07 or 7%

so
Where: A = P(1 + rt)
A=5000(1+0.07*3)
A=5000*(1.21)
A=6050

Answer 2

Amount becomes 5000+1050=6050
Hope it helps you...