document.write( "Question 163019This question is from textbook intermediate algebra
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document.write( ": please help!! this is an elimination method word problem. thks in advance.
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document.write( "an airplane has a total of 152 seats the number of coach-class seats 5 more than six times the number of first-class seats. How many of each type of seats are there on the plane? \n" );
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Algebra.Com's Answer #120132 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! An airplane has a total of 152 seats the number of coach-class seats 5 more \n" ); document.write( " than six times the number of first-class seats. \n" ); document.write( "How many of each type of seats are there on the plane? \n" ); document.write( "; \n" ); document.write( "Let x = no. of coach seats \n" ); document.write( "Let y = no. of 1st class \n" ); document.write( ": \n" ); document.write( "Write an equation for each statement: \n" ); document.write( "; \n" ); document.write( "\"an airplane has a total of 152 seats\" \n" ); document.write( "x + y = 152 \n" ); document.write( ": \n" ); document.write( "\"the number of coach-class seats 5 more than six times the number of first-class seats.\" \n" ); document.write( "x = 5 + 6y \n" ); document.write( "Arrange like the 1st equation \n" ); document.write( "x - 6y = 5 \n" ); document.write( ": \n" ); document.write( "using these two equations we have: \n" ); document.write( "x + y = 152 \n" ); document.write( "x - 6y = 5 \n" ); document.write( "--------------subtraction eliminates x: \n" ); document.write( "0 + 7y = 174 \n" ); document.write( "y = \n" ); document.write( "y = 21 ea 1st class seats \n" ); document.write( ": \n" ); document.write( "I'll let you solve for x. and find the coach class seats. \n" ); document.write( "Use the 1st equation to find this, and test your solutions in the 2nd equation.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |