document.write( "Question 1136233: Adam will use x black stone tiles and y gray stone tiles to cover his patio floor. Black stone tiles cost $5 each and gray stone tiles cost $4 each. He can spend up to $150 on his project, and he wants the number of gray stone tiles to be less than half the number of black stone tiles. \n" ); document.write( "
Algebra.Com's Answer #754009 by Boreal(15235)\"\" \"About 
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5x+4y<=150
\n" ); document.write( "y<0.5x
\n" ); document.write( "Therefore, 5x+2x<150 now less than, not equal to
\n" ); document.write( "7x<150
\n" ); document.write( "x < 21
\n" ); document.write( "105+4y<=150
\n" ); document.write( "4y<=45
\n" ); document.write( "y<=11
\n" ); document.write( "(21, 11) works for the first inequality but not the second.
\n" ); document.write( "(21, 10) works for both. Cost is $105+40 or $145.
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