document.write( "Question 933366: please help me with this question..
\n" ); document.write( "At the beginning of the day,the prices of stocks A and B are the same.At the end of the day,the price of stock A has increased by 1/10 of its original price and the price of stock B has decreased by 1/10 of its original price .The new price of stock A is what fraction of the new price of stock B?
\n" ); document.write( "

Algebra.Com's Answer #566763 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
At the beginning of the day, both stocks have a price of 10 in some currency.
\n" ); document.write( "(If there is no currency that will do that, I can invent one).
\n" ); document.write( "At the end of the day, the price of stock A is
\n" ); document.write( "\"10%2B%281%2F10%29%2A10=10%2B1=11\" ,
\n" ); document.write( "while the rice of stock B is
\n" ); document.write( "\"10-%281%2F10%29%2A10=10-1=9\" ,
\n" ); document.write( "so the new price of stock A, as a fraction of the new price of stock B, is
\n" ); document.write( "\"highlight%2811%2F9=1%262%2F9%29\"
\n" ); document.write( "
\n" ); document.write( "NOTE:
\n" ); document.write( "Solved as shown above, you can easily get to the answer,
\n" ); document.write( "which is a great advantage for timed tests where you do not need to \"show your work\".
\n" ); document.write( "If you need to show your work, and/or
\n" ); document.write( "if your teacher objects to the use of made-up currencies,
\n" ); document.write( "you can do the same calculations starting with
\n" ); document.write( "\"Let \"x\" be the price of either stock at the beginning of the day.\"
\n" ); document.write( "Then, the new price of stock A at the end of the day is
\n" ); document.write( "\"x%2B%281%2F10%29%2Ax=x%2B0.1x=1.1x\" ,
\n" ); document.write( "and the new price of stock B at the end of the day is
\n" ); document.write( "\"x-%281%2F10%29%2Ax=x-0.1x=0.9x\" ,
\n" ); document.write( "so the new price of stock A, as a fraction of the new price of stock B, is
\n" ); document.write( "\"1.1x%2F%220.9+x%22=1.1%2F0.9=highlight%2811%2F9=1%262%2F9%29\"
\n" ); document.write( "
\n" );