Question

During a period of two years, a principal of Rs. 100 amounts to Rs. 121 at the annual compound rate of r%. The value of r will be
•«explanation is must»•​

Answer 1

Answer:

answer is 10%

Step-by-step explanation:

Amount = 121

Principal = 100

A = p (1+r/100) ^t

121= 100(1+r/100)^2

121/100 = (1+r/100)^2

(11/10)^2 = (1+r/100)^2

11/10 = 1+r/100

11/10 × 100 = 100+r

110 = 100 + r

110-100 = r

10% = r

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