The first question: An investor saves annually an amount of money amounting to A with an annual interest of 8%, and after the expiry of 10 years, the investor decided to withdraw the amount to buy a...

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Extracted text: The first question: An investor saves annually an amount of money amounting to A with an annual interest of 8%, and after the expiry of 10 years, the investor decided to withdraw the amount to buy a machine whose useful life is 12 years and with a book value at the end of the fourth year of $ 40,000 and its recoverable value at the end of the useful life of $ 2000 Find the value of A if The depreciation was calculated using the sum of the numbers of years