document.write( "Question 1162063: Aidan is doing a multiple -choice test with 20 questions. He scores 3 marks for a correct answer and loses 1 mark if the answer is incorrect. Aidan answers all the questions and scores 40 marks. How many questions has he answered correctly? \n" ); document.write( "
Algebra.Com's Answer #785769 by josgarithmetic(39630)\"\" \"About 
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Correct marks, y
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\n" ); document.write( "\n" ); document.write( "\"system%28x%2By=20%2C-x%2B3y=40%29\"\r
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\n" ); document.write( "\n" ); document.write( "Do E2 plus E1, finding \"4y=60\", and then \"highlight%28y=15%29\", correct answers.\r
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\n" ); document.write( "\n" ); document.write( "\"5\" incorrect answers.
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