document.write( "Question 185026: Teacher generated question, not from a textbook.\r
\n" ); document.write( "\n" ); document.write( "You are in charge of setting up a room for an awards banquet at your school. A total of 122 people will attend the banquet. The school has tables that seat either 8 or 10 people. No empty seats are allowed. How many of each size table will you need to use to make sure everyone has a seat?\r
\n" ); document.write( "\n" ); document.write( "Can get to \"8x + 10y = 122\" but need to develop second equation to solve using elimination or substitution.\r
\n" ); document.write( "\n" ); document.write( "Thank you.
\n" ); document.write( "

Algebra.Com's Answer #138827 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Teacher generated question, not from a textbook.
\n" ); document.write( "You are in charge of setting up a room for an awards banquet at your school.
\n" ); document.write( " A total of 122 people will attend the banquet. The school has tables that seat
\n" ); document.write( " either 8 or 10 people. No empty seats are allowed. How many of each size table
\n" ); document.write( " will you need to use to make sure everyone has a seat?
\n" ); document.write( "Can get to \"8x + 10y = 122\" but need to develop second equation to solve
\n" ); document.write( " using elimination or substitution.
\n" ); document.write( ":
\n" ); document.write( "That's the only equation you will get from the information given, however since
\n" ); document.write( "there are no empty seats, x and y have to be integers that will give 122.
\n" ); document.write( ":
\n" ); document.write( "simplify the equation by dividing by 2, re-write it:
\n" ); document.write( "4x + 5y = 61
\n" ); document.write( "5y = 61 - 4x
\n" ); document.write( "y = \"61%2F5\" - \"4%2F5\"x
\n" ); document.write( "choose a value for x and see if y is an integer, if it is that is a one solution
\n" ); document.write( "I found there are three solutions
\n" ); document.write( "x=4
\n" ); document.write( "y = \"61%2F5\" - \"4%2F5\"(4)
\n" ); document.write( "y = \"61%2F5\" - \"16%2F5\"
\n" ); document.write( "y = \"45%2F5\"
\n" ); document.write( "y = 9; (32 + 90 = 122)
\n" ); document.write( "and
\n" ); document.write( "x = 9
\n" ); document.write( "y = \"61%2F5\" - \"4%2F5\"(9)
\n" ); document.write( "y = \"61%2F5\" - \"36%2F5\"x
\n" ); document.write( "y = \"25%2F5\"
\n" ); document.write( "y = 5; (72 + 40 = 122)
\n" ); document.write( "and one more
\n" ); document.write( "x=14
\n" ); document.write( "y = \"61%2F5\" - \"4%2F5\"(14)
\n" ); document.write( "y = \"61%2F5\" - \"56%2F5\"
\n" ); document.write( "y = \"5%2F5\"
\n" ); document.write( "y = 1; (112 +10 = 122)\r
\n" ); document.write( "\n" ); document.write( "
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