document.write( "Question 971104: An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%. Approximately how old is the car? \n" ); document.write( "

Algebra.Com's Answer #593769 by khai(18) $\"\"$ $\"About$

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y = A (1-r)t
\n" ); document.write( "0.5 = 1(1-0.1)t
\n" ); document.write( "t = 5/9 or 0.55 \n" ); document.write( "

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