document.write( "Question 229554: If you averaged 76% on two 100 point tests, what would you have to score on the next 80 point test to raise your average to 80%?
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Algebra.Com's Answer #170168 by ankor@dixie-net.com(22740)\"\" \"About 
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If you averaged 76% on two 100 point tests, what would you have to score on the next 80 point test to raise your average to 80%?
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\n" ); document.write( "Let x = score required to accomplish this:
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\n" ); document.write( "\"%28.76+%2B+.76+%2B+%28x%2F80%29%29%2F3\" = .80
\n" ); document.write( "Multiply equation by 3
\n" ); document.write( ".76 + .76 + \"x%2F80\" = 3(.80)
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\n" ); document.write( "1.52 + \"x%2F80\" = 2.40
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\n" ); document.write( "Multiply equation by 80
\n" ); document.write( "1.52(80) + x = 2.4(80)
\n" ); document.write( "121.6 + x = 192
\n" ); document.write( "x = 192 - 121.6
\n" ); document.write( "x = 70.4 has to be scored on this 80 point test
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\n" ); document.write( "Check solution
\n" ); document.write( "\"%28.76+%2B+.76+%2B+%2870.4%2F80%29%29%2F3\" = .80
\n" ); document.write( "\"%28.76+%2B+.76+%2B+.88%29%2F3\" = .80
\n" ); document.write( "\"2.4%2F3\" = .8 which is 80% \n" ); document.write( "
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