ضروري ابي طريقة حل هالمسائل

exersice:
in problem 1 find (a) the compound amount and(b) the compound interest for the given investment and rate

1-$ 6000 for eight years at an effective rate of 8%
:الاجابة لازم تكون
(a) 11,105.58$
(b)5105.58$

find the effective rate that corresponds to the given norminal rate. Round answer to three decimal place
2- 3% compounded semiannually
الاجابة:
3.023%

3- 4% compounded daily
الاجابة:
4.081%

A $6000 certificate of deposit is purchased for $6000 and is held 7 years.if the certificate earns an effective rate of 8%, what is it worth at the end of that period?
الاجابة:
$10,282.95

how many years will it take for money to triple at the effective rate of r?
الاجابة:
n= ln3
ln(1+r)

Finance charge: A major credit card company has a finance charge of 1 1% (واحد ونص) per month on the outstanding indebtedness. (a) what is the nominal rate compounded monthly? (b) what is effective rate?
الاجابة:
(a) 18%
(b)19.56%

How long would it take for a principal of p to double if money is worth 12% compounded monthly?Give your answer to the nearest month.
الاجابة:
5.81 years or 5 years,10 month

Saving Account: A bank advertises that it pays interst on saving account at the rate of 5 1 % compounded daily. find the effective rate if the bank assumes that a year cosists of (a)360 days or (b)365 days in determining the daily rate. Assume that compounding occurs 365 time a year and round your answer to two decimal place
الاجابة:
(a)5.47%
(b)5.39%

سبحان الله و بحمده