document.write( "Question 1114034: In a recent year, companies spent a total of $87.6 billion on newspaper, television, and radio ads. The total amount spent on television and radio ads was only $2.8 billion more than the amount spent on newspaper ads alone. The amount spent on newspaper ads was $5.5 billion more than what was spent on television ads. How much was spent on each form of advertising? (Hint: Let the variables represent numbers of billions of dollars.) \n" ); document.write( "

Algebra.Com's Answer #729046 by stanbon(75887) $\"\"$ $\"About$

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In a recent year, companies spent a total of $87.6 billion on newspaper, television, and radio ads. The total amount spent on television and radio ads was only $2.8 billion more than the amount spent on newspaper ads alone. The amount spent on newspaper ads was $5.5 billion more than what was spent on television ads. How much was spent on each form of advertising? (Hint: Let the variables represent numbers of billions of dollars.)
\n" ); document.write( "Equations:
\n" ); document.write( "n + t + r = 87.6
\n" ); document.write( "t + r = n + 2.8
\n" ); document.write( "n = t + 5.5
\n" ); document.write( "------------------
\n" ); document.write( "Rearrange::
\n" ); document.write( "n + t + r = 87.6
\n" ); document.write( "n - t - r = -2.8
\n" ); document.write( "n - t + 0 = 5.5
\n" ); document.write( "----------------------
\n" ); document.write( "Use any method you know to solve the system to get:
\n" ); document.write( "n = 42.4
\n" ); document.write( "t = 36.9
\n" ); document.write( "r = 8.3
\n" ); document.write( "---
\n" ); document.write( "I used my TI-84+ Matrix function.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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