Question

. Find the time
ich time will 40000 yield 8620.25 as interest at 10% pa, interest being payable half yearly​

Answer 1

Step-by-step explanation:

Given Find the time  will 40000 yield 8620.25 as interest at 10% pa, interest being payable half yearly

• We know that C.I = A – P
• Or A = C.I + P
•         = 40000 + 8620.25
•  A = Rs 48620.25  
• Amount A = P(1 + r/100)^n
•  48620.25 = 40000 ( 1 + 10 /2 x100)^2t  
• 48620.25 / 40000 = (21 / 20)^2t
• Multiply by 4 we get
• 194481 / 160000 = (21 / 20)^2t
• (3 x 7 / 20)^4 = (21 / 20)^2t
• (21 / 20)^4 = (21 / 20)^2t
• So 2t = 4 (equating the exponents)
• So t = 2  years

Reference link will be

https://brainly.in/question/13888559