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) You can put this solution on YOUR website! 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. \n" ); document.write( " |