Math, asked by kc015901, 9 days ago

After how many years will ₹ 8000 becomes ₹10125 at 12 1/2% p. a compound interest .


answer in pic​

Answers

Answered by shreyasengupta1862
3

Principal = Rs.8000

Amount = Rs.10125

Rate = 25/2%

Time = t

A = P*(1+R/100)^T

=> 10125 = 8000(1+25/200)^T

=> 10125/8000 = (225/200)^T

=> 2025/1600 = (45/40)^T

=> 405/320 = (9/8)^T

=> 81/64 = (9/8)^T

=> (9/8)^2 = (9/8)^T

Therefore T = 2 years

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