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
\n" ); document.write( "\n" ); 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)\"\" \"About 
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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
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