Question

If the interest is compounded annually at the rate of r % p.a. and an initial deposit of 1200
becomes 1323 after two years, then for the value of r.
answer plss​

Answer 1

Answer:

Let r% be rate per annum, then,

1323=1200(1+

100

r

)

2

⟹

1200

1323

=(1+

100

r

)

2

⟹

1200

1323

=(1+

100

r

)

⟹1.05=(1+

100

r

)

⟹

100

r

=1.05−1=0.05

⟹r=100×0.05=5%

Step-by-step explanation:

thanks

Answer 2

Answer:

5% per annum

Step-by-step explanation:

Amount (A) = Rs.1323

Principal (P) = Rs.1200

Time (n) = 2 years

A = P (1 + R/100)ⁿ

=> 1323 = 1200 (1 + R/100)²

=> 1323/1200 = (1 + R/100)²

=> 441/400 = (1 + R/100)²

=> (21/20)² = (1 + R/100)²

=> 21/20 = 1 + R/100

=> 21/20 - 1 = R/100

=> 1/20 = R/100

=> R = 5%