Question

At what rate percent will Rs12000 amount to Rs14520 in two years, when the interest is compounded annually?​

Answer 1

Step-by-step explanation:

given: MV = 14520, P = 12000, n = 2

MV = P [ (1 + r/100)^n ]

=> 14520 = 12000 [(1 + r/100)^n]

=> 14520/12000 = (1 + r/100)²

=> 1452/1200 = (1 + r/100)²

=> 484/400 = (1 + r/100)²

=> 121/100 = (1 + r/100)²

taking square root on both sides,

=> 11/10 = 1 + r/100

=> 11/10 - 1 = r/100

=> 1/10 = r/100

=> 10 r = 100

=> r = 10%

Answer 2

Answer:

HELLO,

ANSWER IS HERE-:

Step-by-step explanation:

PRINCIPAL=12,000

TIME PERIOD=2years

AMOUNT=14,520

RATE OF INTEREST%= ? (This we have to find)

As we know-

Amount = P(1+R/100) (n=Time)

14,520 = 12,000(1+R/100)2

14,520/12000=(1+R/100)2

121/100=(1+R/100)2

:Square ing on both sides

11/10=1+R/100

(11/10)-1=R/100

1/10=R/100 (Cross Multiplication)

R=1×100/10

R=10%

:RATE OF INTEREST% = 10%

THANKS