Answer:
The money should be invested in bank = $137,639.05
Explanation:
Given annually withdrawal money (annuity ) = $12000
Number of years (n ) = 20 years
Interest rate = 6 percent.
Since a person withdraw money annually for next 20 years with 6 percent interest rate. Now we have to calculate the amount that have been invested in the account today. So below is the calculation for invested money.
![\text{Present value of annuity} = \frac{Annuity [1-(1 + r)^{-n}]}{rate} \\= \frac{12000 [1-(1 + 0.06)^{-20}]}{0.06} \\=12000 \times 11.46992122 \\=137,639.05](https://tex.z-dn.net/?f=%5Ctext%7BPresent%20value%20of%20annuity%7D%20%3D%20%5Cfrac%7BAnnuity%20%5B1-%281%20%2B%20r%29%5E%7B-n%7D%5D%7D%7Brate%7D%20%5C%5C%3D%20%5Cfrac%7B12000%20%5B1-%281%20%2B%200.06%29%5E%7B-20%7D%5D%7D%7B0.06%7D%20%5C%5C%3D12000%20%5Ctimes%2011.46992122%20%5C%5C%3D137%2C639.05)
Answer:
a. How long will the current bridge system work before a new bracing system is required?: 64.18 years or 64 years and 2 months.
b. What if the annual traffic rate increases at 8 % annually: The bracing system will last for 24.65 years or 24 years and 7 months.
c. At what traffic increase rate will the current system last only 12 years: 17.13%
Explanation:
a. Denote x is the time taken for the number of pedestrian to grow from 300 to 2000. The current pedestrian is 300, the grow rate per year is 3% or 1.03 times a year. Thus, to reach 2,000, we have the equation: 300 x 1.03^x = 2000. Show the equate, we have 1.03^x = 6.67 <=> x = 64.18
b. Denote x is the time taken for the number of pedestrian to grow from 300 to 2000. The current pedestrian is 300, the grow rate per year is 8% or 1.08 times a year. Thus, to reach 2,000, we have the equation: 300 x 1.08^x = 2000. Show the equate, we have 1.08^x = 6.67 <=> x = 24.65.
c. Denote x as traffic increase rate. The current pedestrian is 300, the grow rate per year is (1+x) times a year. Thus, to reach 2,000 after 12 years and thus a new bracing system to be in place, we have the equation: 300 x (1+x)^12 = 2000. Show the equate, we have (1+x)^12 = 6.67 <=> 1+x = 1.1713 <=> x = 17.13%.
You would say "<span>Mr. Schott, Ms. West, sales representative for Seascape Graphics."
In professional introductions like this, you should include both name, position, and the place of the workers of that person. By doing this, your boss will understand the probable intent of that person and understand the relevancy between her and what the company wants to achieve.</span>