plz solved all clearly 1. How long will it take for an investment to triple at 10% per year (a) simple interestand (b) compound interest?2. What is the present worth of a future cost of S180000 to a company 12 years fromnow at a compound interest rate of 12% per year?3. What is the future worth of a uniform, end of period, annual series of $8000 for 12years at an interest rate of 8% per year?4. Calculate the present worth of an expenditure of $7500 per year for 12 years thatwill start 4 years from now if the interest rate is 12% per year?5. The company is planning to borrow now $85000 at 18% per year. The companyexpects to repay the loan with eight equal annual payments at the end of each year,beginning I year after the loan is received. Find the amount of equal annual payments.6. A person borrows $45000 at an interest rate of 12% per year. It is desired to repaythe loan in 12 payments, with the first payment 3 years from now. If the payments areto decrease by $150 each time, determine the size of the fifth payment.7. Calculate the equal, end-of-period, annual cost of a machine which costs $75000initially and will have a $17000 salvage value after 11 years. The operating cost is$9000 at the end of yearl and amounts increasing by 8% each year. Use an interestrate of 10% per year.8. What equal amounts of money will have to be deposited 2, 5 and 8 years fromnow, if you want to have $50000 in your account 14 years from now? Use aninterest rate of 10% per year.9. What equal uniform annual payment for nine years beginning two years from nowwould be equivalent to spending $8000 now, $5000 six years from now and$9000 ten years from now if the interest rate is 11% per year?An engineer planning for her retirement will deposit 15% of her salary each yearinto a stock fund. If her salary this year is $88000(end of year 1) and she expects hersalary to increase by 12% each year, what will be the future worth of the fund after 16years if it earns 10% per year?10.

Given: Interest rate=10% Note: Due to multiple questions being posted, the first question has been…

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1. How long will it take for an investment to triple at 10% per year (a) simple interest and (b) compound interest?

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

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Question

plz solved all clearly

1. How long will it take for an investment to triple at 10% per year (a) simple interest
and (b) compound interest?
2. What is the present worth of a future cost of S180000 to a company 12 years from
now at a compound interest rate of 12% per year?
3. What is the future worth of a uniform, end of period, annual series of $8000 for 12
years at an interest rate of 8% per year?
4. Calculate the present worth of an expenditure of $7500 per year for 12 years that
will start 4 years from now if the interest rate is 12% per year?
5. The company is planning to borrow now $85000 at 18% per year. The company
expects to repay the loan with eight equal annual payments at the end of each year,
beginning I year after the loan is received. Find the amount of equal annual payments.
6. A person borrows $45000 at an interest rate of 12% per year. It is desired to repay
the loan in 12 payments, with the first payment 3 years from now. If the payments are
to decrease by $150 each time, determine the size of the fifth payment.
7. Calculate the equal, end-of-period, annual cost of a machine which costs $75000
initially and will have a $17000 salvage value after 11 years. The operating cost is
$9000 at the end of yearl and amounts increasing by 8% each year. Use an interest
rate of 10% per year.
8. What equal amounts of money will have to be deposited 2, 5 and 8 years from
now, if you want to have $50000 in your account 14 years from now? Use an
interest rate of 10% per year.
9. What equal uniform annual payment for nine years beginning two years from now
would be equivalent to spending $8000 now, $5000 six years from now and
$9000 ten years from now if the interest rate is 11% per year?
An engineer planning for her retirement will deposit 15% of her salary each year
into a stock fund. If her salary this year is $88000(end of year 1) and she expects her
salary to increase by 12% each year, what will be the future worth of the fund after 16
years if it earns 10% per year?
10.

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