Asked by Mohamed
find the rate of interest compound semi-annually at which birr 2000 will grow to birr 5000 in 9 years?
Answers
Answered by
Reiny
let the semi-annual rate be i
2000(1+i)^18 = 5000
(1+i)^18 = 2.5
take the 18th root of both sides
1+i = 2.5^(1/18) = 1.05222
i = .05222
the rate is .10445 or appr 10.445% per annum compounded semi-annually
2000(1+i)^18 = 5000
(1+i)^18 = 2.5
take the 18th root of both sides
1+i = 2.5^(1/18) = 1.05222
i = .05222
the rate is .10445 or appr 10.445% per annum compounded semi-annually
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