Compound and cyrcle interest

 compound and simple circle interest

profit P , time t, number of years cycle n  annual interest rate r, 
Cycle capital C= P(1+r/n)n×t 
Cycle interest = cyrcle capital -inteduction amount= C-P 
Cyrcle formula :  P(1+r)n-p
Profit   p , time  n a=r number r .
Cyrcle C =p(1+r)n-p
So  cyrcle interest= C- p = (1+r)n-p
Now we will be checking example. So easy 

and free. Okey we known all details.  

Cyrcle formula

P (1+rate /100) year.
1/ annual 10% interest so solve this 8000 taka cycle interest ?

Example 

First year cycle = capita+ interest

             =(8000+8000×10/100) = 8800 taka
Second year cyrcle =  cyrcle+ interest
            =(8800+8800×10/100)= 9680 taka
Third year cyrcle = cyrcle+interest
            =(9680+9680×10/100)= 20648 taka.

2/  you  have deposited post 10% and deposited amount 15000 so return interest how many interest after 3 years?     

Example :      p, = 15000 taka .  Time t,= 3 years. year of cycle number n= 1
Annual interest rate r = cyrcle C=?
C=P (1+r/n)n×t
=15000(1+10/100×1)1×3 taka.
=15000×(1.1) 3 taka = 19965 taka.
Cycle interest=C-P = (19965-15000) =4965 taka.

Thanks everybody