Thursday, July 16, 2009

Compound interest...?

1- Find the amount of money in an account after 6 years, 4 months if $2000 is deposited at 7% compounded monthly.



2- If $75,000 is deposited in a bank paying interest at an annual rate of 8% compounded continuously, how much will be in the account after 3 years and 9 months? (Assume no withdrawals are made)



3- Assume that you deposit $1000 at 8% compounded annually. How long will it take for your money to be tripled?



Compound interest...?military loans





P=2000



r=0.07



n=6 years, 4 months



compounded 12 times a year



Amount=(1+r/12)^(76)



=(1+0.07/12)^76



You%26#039;ll have to evaluate this expresion using your calculator. Programs and calculators assume that the money is withdrawn at the completion of exactly 6 years, but it is possible to evaluate this expression using your calculator.



2)Amount=75000e^0.08t



75225.34



3)3000=1000(1+0.08)^n



solve for n=14.27

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