document.write( "Question 60259This question is from textbook Pre-Algebra
\n" ); document.write( ": Janette Bought a Share of stock on PRT Corporation. The first week, it increased in value 25%. During the second week, it decreased $1.40 in value. The next week it doubled in value, so she sold it. She got $27.20 for it. How much had she paid for it? \n" ); document.write( "
Algebra.Com's Answer #41383 by uma(370)\"\" \"About 
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Let Janette's cost price be $x
\n" ); document.write( "During the first week it increased by 25%
\n" ); document.write( "So cost by the end of 1st week = $1.25x
\n" ); document.write( "Decrease during the second week = $1.4
\n" ); document.write( "So cost by the end of 2nd week = $1.25x - 1.4
\n" ); document.write( "Cost at the end of the third week = double the earlier amount
\n" ); document.write( " = 2(1.25x - 1.4)\r
\n" ); document.write( "\n" ); document.write( "Given that 2(1.25x - 1.4) = 27.2
\n" ); document.write( "==> (1.25x - 1.4) = 27.2/2 [dividing by 2 throughout]
\n" ); document.write( "==> (1.25x - 1.4) = 13.6
\n" ); document.write( "==> 1.25x - 1.4 + 1.4 = 13.6 + 1.4
\n" ); document.write( "==> 1.25x = 15
\n" ); document.write( "==> 1.25x/1.25 = 15/1.25
\n" ); document.write( "==> x = 12\r
\n" ); document.write( "\n" ); document.write( "So Janette had paid $12 for the stock.\r
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\n" ); document.write( "\n" ); document.write( "Good Luck!!!\r
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