A machine costs $20,000 and has a 5-year life with no salvage value. If the interest rate is 10%, what is the equivalent annual cost of owning the machine?

A company wants to accumulate $500,000 in 10 years to replace equipment. If they can earn 8% interest per year, how much must be deposited annually?

Maintenance costs for a machine are expected to be $1,000 in year 1 and increase by$500 each year for 5 years. Find the equivalent uniform annual maintenance cost at i = 10%.

An engineer's salary is $60,000 in year 1 and is expected to increase by 5% each year for the next 10 years. If the interest rate is 8%, what is the present worth of these salaries?