Question

a certain sum amount to Rs 12960 at compound interest in 2 year and rs 13176 in 3year. find out the rate of interest per among.

Answer 1

please mark it as a brainliest answer

Answer 2

Rate of interest = 5/3 %  or 1.67 % per annum if a certain sum amount to Rs 12960 at compound interest in 2 year and rs 13176 in 3year

Step-by-step explanation:

a certain sum amount to Rs 12960 at compound interest in 2 year and rs 13176 in 3year.

=> interest in 3rd year = 13176 - 12960  = 216 Rs

216 = 12960 * R * 1 /100

=> R = 2160/1296

=> R = 10/6

=> R = 5/3

Rate of interest = 5/3 %  or 1.67 % per annum

Other method

Amount P

P(1 + R/100)² = 12960

P(1 + R/100)³ = 13176

=> (1 + R/100) = 13176/12960

=> R/100 = 13176/12960 - 1

=> R/100 = 216 /12960

=> R = 21600 /12960

=> R = 5/3

Learn more:

calculate the compound interest for the second year on 8000 ...

https://brainly.in/question/3063332

What is the principle amount which earns rs252 as a compound ...

https://brainly.in/question/10989911

find the amount and compound interest on rs 750 lent at compound ...

https://brainly.in/question/5603012