document.write( "Question 537683: You are about to take a test that contains computation problems worth 4 points each and word problems worth 7 points each. You can do a computation problem in 2 minutes and a word problem in 4 minutes. You have 48 minutes to take the test and may answer no more than 14 problems. Assume that you answer all the problems attempted correctly. \n" ); document.write( "
Algebra.Com's Answer #353002 by ankor@dixie-net.com(22740)\"\" \"About 
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\n" ); document.write( "You are about to take a test that contains computation problems worth 4 points each and word problems worth 7 points each.
\n" ); document.write( " You can do a computation problem in 2 minutes and a word problem in 4 minutes. You have 48 minutes to take the test and may answer no more than 14 problems.
\n" ); document.write( " Assume that you answer all the problems attempted correctly.
\n" ); document.write( ":
\n" ); document.write( "Let w = no. of word problems
\n" ); document.write( "Let c = no. of Computation problems
\n" ); document.write( ":
\n" ); document.write( "Time equation
\n" ); document.write( "2c + 4w = 48
\n" ); document.write( ":
\n" ); document.write( "No. of problems equation
\n" ); document.write( "c + w = 14
\n" ); document.write( "multiply above equation by -2, add to the 1st equation
\n" ); document.write( "2c + 4w = 48
\n" ); document.write( "-2c -2w = -28
\n" ); document.write( "---------------addition eliminates c, find w
\n" ); document.write( "2w = 20
\n" ); document.write( "w = 10 word problems
\n" ); document.write( "then
\n" ); document.write( "14-10 = 4 computation problems \n" ); document.write( "
\n" );