document.write( "Question 284723: A rock and a half rock weigh a pound and a half. The rock and the half rock weigh the same. How much would half the whole rock and the whole of the half rock weigh?\r
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document.write( "a 2 1/2 b 1 1/8 c 1 7/2 d 2 1/4 e None of these.
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Algebra.Com's Answer #207284 by richwmiller(17219) You can put this solution on YOUR website! let x= whole rock \n" ); document.write( "y/2=half rock\r \n" ); document.write( "\n" ); document.write( "x+y/2=1.5=3/2 \n" ); document.write( "we are told that the whole rock and the half rock weight the same \n" ); document.write( "x=y/2 \n" ); document.write( "x=3/2*1/2=3/4 \n" ); document.write( "y/2=3/4 \n" ); document.write( "y=6/4=3/2 \n" ); document.write( "half the whole rock =3/8 \n" ); document.write( "the whole of half rock =3/4 \n" ); document.write( "3/8+3/4= \n" ); document.write( "3/8+6/8= \n" ); document.write( "9/8= 1 1/8 \n" ); document.write( "answer b 1 1/8\r \n" ); document.write( "\n" ); document.write( "we are not adding half of the whole rock but removing it. \n" ); document.write( "we are removing 3/8 \n" ); document.write( "so instead of 3/4+3/4 we have 3/8 +3/4 \n" ); document.write( " \n" ); document.write( " |