document.write( "Question 1010137: Alice's Restaurant has a total of 258 seats. The number of seats in the non-smoking section is 51 more than twice the number of seats in the smoking section. How many seats are in each section? \r
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document.write( "I have tried to solve this by doing this equation: x+y=258
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document.write( " 2x+51=258
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document.write( "It seems that my equation does not work. \n" );
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Algebra.Com's Answer #625606 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Your first equation is correct, but your second equation is not correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let \n" ); document.write( "x = number of seats in the non-smoking section \n" ); document.write( "y = number of seats in the smoking section\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\"The number of seats in the non-smoking section is 51 more than twice the number of seats in the smoking section\"\r \n" ); document.write( "\n" ); document.write( "means that\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(number of non-smoking seats) = 2*(smoking seats) + 51\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(x) = 2*(y) + 51\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 2y + 51\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the second equation should be x = 2y+51. Note: if you made x the number of seats in the smoking section, then you'd have y = 2x+51. It's the same idea, just with the variables swapped. You'll get the same answers either way.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-----------------------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Go back to x+y = 258 and replace x with 2y+51\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x+y = 258 \n" ); document.write( "2y+51+y = 258\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now solve for y \n" ); document.write( "2y+51+y = 258 \n" ); document.write( "3y+51 = 258 \n" ); document.write( "3y+51-51 = 258-51 \n" ); document.write( "3y = 207 \n" ); document.write( "3y/3 = 207/3 \n" ); document.write( "y = 69\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Use this to find x \n" ); document.write( "x = 2y+51 \n" ); document.write( "x = 2*69+51 \n" ); document.write( "x = 138+51 \n" ); document.write( "x = 189\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 189 seats in the non-smoking section. There are 69 seats in the smoking section. \n" ); document.write( " |