document.write( "Question 528471: Last month, Alex spent 40% of his salary on a laptop. He then spent 30% of it on his bills and saved the remaining $1200. What was his salary?\r
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document.write( "Can you please explain how to solve this? Thank you. \n" );
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Algebra.Com's Answer #349292 by oberobic(2304)![]() ![]() ![]() You can put this solution on YOUR website! He spent 70% of his salary and had $1200 left. \n" ); document.write( "Let 'x' be his salary. \n" ); document.write( "100%-70% = 30% left. \n" ); document.write( "30%x = 1200 \n" ); document.write( ".3x = 1200 \n" ); document.write( "x = 4000 \n" ); document.write( ". \n" ); document.write( "Check the math. \n" ); document.write( ".4*4000 = 1600 \n" ); document.write( ".3*4000 = 1200 \n" ); document.write( "4000 - 1600 -1200 = 1200 \n" ); document.write( "Correct. \n" ); document.write( ". \n" ); document.write( "Answer: His salary is $4000. \n" ); document.write( ". \n" ); document.write( "Done. \n" ); document.write( " |