document.write( "Question 163019This question is from textbook intermediate algebra
\n" ); document.write( ": please help!! this is an elimination method word problem. thks in advance.
\n" ); 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" ); document.write( "
Algebra.Com's Answer #120132 by ankor@dixie-net.com(22740)\"\" \"About 
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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?
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\n" ); document.write( "Let x = no. of coach seats
\n" ); document.write( "Let y = no. of 1st class
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\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 = \"147%2F7\"
\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
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