Question

principal = 6400 rate = 12.5. time = 2 years
find the amount and compound interest

Answer 1

SI= p*R*T/100
SI=6400*12.5*2/100
SI=1600
so amount=6400+1600=8000

and you can find compound interest.

Answer 2

Answer:

After 2 years final amount = 8100 Rs

compound interest C.I = 1700 Rs.

Step-by-step explanation:

Given data

Principal amount P = 6400

Rate of interest R = 12.5%

Time period     T = 2 years

Here we need find resultant amount and compound interest

we know the formula for resultant amount when compound interest given   =  $P(1+\frac{r}{100} )^{t}$

= $6400(1+\frac{12.5}{100} )^{2}$

= $6400(\frac{100+12.5}{100} )^{2}$    

= $6400(\frac{112.5}{100} )^{2}$

= 6400(1.125)²

= 6400(1.265625) = 8100

The Resultant amount = 8100 Rs.

The compound interst = Resultant amount - Principal amount

                                     = 8100 Rs - 6400 Rs

                                     = 1700 Rs.