document.write( "Question 872604: Here's another one! Please help!
\n" ); document.write( "suppose that the population of Country A is given by y=-6.95x + 903.74 million and the population of Country B is given by y= 2.45x + 743.94 million. Where X is the number of years since 1960. Find the year in which the population of the country's were equal. Explain the method you used to find your answer \n" ); document.write( "
Algebra.Com's Answer #526283 by mananth(16946)\"\" \"About 
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If the populations are equal then y is same in both equations.\r
\n" ); document.write( "\n" ); document.write( "solve both equations
\n" ); document.write( "6.950 x + 1.000 y = 903.740 .............1
\n" ); document.write( "
\n" ); document.write( "-2.450 x + 1.000 y = 743.940 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1.000
\n" ); document.write( "Multiply (2) by 1.000
\n" ); document.write( "-6.950 x -1.000 y = -903.740
\n" ); document.write( "-2.450 x + 1.000 y = 743.940
\n" ); document.write( "Add the two equations
\n" ); document.write( "-9.400 x = -159.800
\n" ); document.write( "/ -9.400
\n" ); document.write( "x = 17 years \r
\n" ); document.write( "\n" ); document.write( "1960 +17 = 1977 they were equal
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