3. Silver prices have a year-over-year inflationary rate increase of 14.6 percent. A company purchased $823,683 of silver during the year just ended right now. Their business has been increasing, and they intend to purchase 35 percent more silver each year, over the previous year's purchase, for the next 5 years. This company earns a real rate of (23) % percent on their money. a) Determine the then-current amounts they will pay for silver at the end of each of the next 5 years. b) Determine the constant value amounts they will pay for silver at the end of each of the next 5 years. c) Determine PW of expenditures over the next 5 years using then-current dollars. d) Determine PW of expenditures over the next 5 years using constant-value dollars.