document.write( "Question 1163334: A new car cost $1 20000. After one year, its value decreases by 20%. For the second year, its value decreases by further 10%. What is the value of the car after two years?
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Algebra.Com's Answer #787402 by Theo(13342) $\"\"$ $\"About$

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let x = the cost of the car.
\n" ); document.write( "after 1 year, the value drops 20%.
\n" ); document.write( "x * (1 - .20) = .8 * x
\n" ); document.write( "after the second year, it drops another 10%.
\n" ); document.write( ".8 * x * (1 - .1) = .9 * .8 * x = .72 * x\r
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\n" ); document.write( "\n" ); document.write( "if the original cost of the car was 120,000, then the value of the car at the end of the second year is .72 * that = 86,400.\r
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\n" ); document.write( "\n" ); document.write( "if the original cost of the car was 12,000, then the value of the car at the end of the second year is .72 * that = 8,640.\r
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