document.write( "Question 252886: If a is increased by 10% and b is decreased by 10%, the resulting numbers will be equal. What is the ratio of a to b ?\r
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document.write( "(A) 9/11 (B) 9/10 (C) 1/1 (D) 10/9 (E) 11/9 \n" );
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Algebra.Com's Answer #184992 by ptaylor(2198) You can put this solution on YOUR website! If we increase a by 10% we will get a+0.1a \n" ); document.write( "If we decrease b by 10% we will have b-0.1b\r \n" ); document.write( "\n" ); document.write( "(a+0.1a)/(b-0.1b)=1 \n" ); document.write( "1.1a=0.9b multiply each side by 10 \n" ); document.write( "11a=9b divide each side by b and also 11 \n" ); document.write( "a/b=9/11\r \n" ); document.write( "\n" ); document.write( "CK \n" ); document.write( "(9+0.9)/(11-1.1)=9.9/9.9=1\r \n" ); document.write( "\n" ); document.write( "Hope this helps ---ptaylor \n" ); document.write( " |