Question

PLZZ DO THE 2ND SUM U WILL MARK U AND FOLLOW AND MAKE MY AS FRND PLZ HELP

Answer 1

principal=8000rs.,,rate=12.5% , time=2yr. , so,,,,. amount=. P(1+r/100)² ,, =8000(1+12.5/100)² now, =8000(1+⅛)² ,=8000×9/8×9/8=125×81=10125rs.compount interest= amount -principal=10125-8000=2125rs.

Answer 2

Amount
$principal {(1 + \frac{rate \: p.a}{100}) }^{n} \\ 8000 {(1 + \frac{12.5}{100} )}^{2} \\ 8000 {(1 + \frac{125}{1000}) }^{2} \\ 8000 \times \frac{1125}{1000} \times \frac{1125}{1000} \\ 10125$
Amount = 10125
Compound Interest = Amount - principal
= 10125 - 8000
= 2125