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The value of a machine, V, at the end of t years is given by V = C(1 - r)^t where C is the original cost and r is the rate of depreciation. Find the value of a machine atthe end of 3 years if the original cost was $1963 and r = 0.2. Round to the nearest cent.

The value of a machine, V, at the end of t years is given by V = C(1 - r)^t where-example-1

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We need to find the value V of a machine, given by:


V=C(1-r)^t

where C is the original cost, t is the number of years, and r is the rate of depreciation.

For this problem, we have:


\begin{gathered} C=\text{ \$}1963 \\ r=0.2 \\ t=3 \end{gathered}

Then, using the above information in the formula, we obtain:


\begin{gathered} V=\operatorname{\$}1963(1-0.2)^3 \\ \\ V=\operatorname{\$}1963(0.8)^3 \\ \\ V=\operatorname{\$}1963(0.512) \\ \\ V\cong\operatorname{\$}1005.06 \end{gathered}

Therefore, rounding to the nearest cent, we obtained:

Answer: $100.06

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