Question

calculate the amt.and the compound intrest on
p=6000
r=5% per year
t=3 year

Answer 1

We know the formula is $\frac{pnr}{100}$.

$SI=\frac{6000*5*3}{100}=\frac{90,000}{100}=900$

Therefore the Simple Interest is 900 and the Amonut is 6000+900=6900.

Answer 2

S.I for the first year=p*r*t/100
Amount at the end of first year=SI+principal
S.I for the second year=p*r*t/100
Amount at the end of second year=SI +principal
SI for the third year=p*r*t/100
Final amount =SI+principal
Compound Interest=(Final Amount-First principal)
amount changes every year.
take amt of first year as the principal for second year
amt of second year as principal for yhird year