Question

at what rate percent will a sum of rupees 4000 yield compound interest of rupees 410 in 2 years​

Answer 1

Answer:

5% per annum

Step-by-step explanation:

Let the Rate percent be R.

Principal (P) = Rs.4000

Compound Interest (CI) = Rs.410

Amount (A) = P+CI = Rs.(4000+410) = Rs.4410

Time (n) = 2 years

A = P (1 + R/100)ⁿ

=> 4410 = 4000 (1 + R/100)²

=> 441/400 = (1 + R/100)²

=> (21/20)² = (1 + R/100)²

=> 21/20 = 1 + R/100

=> R/100 = 21/20 - 1

=> R/100 = 1/20

=> R = 5%

Answer 2

Step-by-step explanation:

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