Question

on what sum will the compound interest at 7.5 % per annum for 3 years compounded annually be RS 3101.40.

Answer 1

amount=p(1+r/100)^t
3101.4=p(1+75/1000)^3
3101.4=p(215/200)^3
3101.4=p(43/40)^3
3101.4=79507p/64000
3101.4*64000/79507=p
2496.6 (approx)=p

principal is 2496.6

Answer 2

☆Hello friend☆
A=P(1+r/100)^n
Rs 3101.40=P(1+7.5/100)^3
Rs 31014/10=P(1075/1000)^3
Rs 31014/10×1000/1075×1000/1075× 1000/1075=Rs 2496.5
$hope \: it \: helps$
☺☺☺