document.write( "Question 150510This question is from textbook
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document.write( ": gian and arwin can finish a project in 4 2/3 hours. gian can do it alone in half as much time as arwin can do the job. How long will it take Arwin to do the job alone. \n" );
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Algebra.Com's Answer #110480 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! gian and arwin can finish a project in 4 2/3 hours. gian can do it alone in half as much time as arwin can do the job. How long will it take Arwin to do the job alone. \n" ); document.write( ". \n" ); document.write( "Let G = time it takes gian to do the the job alone \n" ); document.write( "and A = time it takes arwin to do the the job alone \n" ); document.write( ". \n" ); document.write( "Since you have two unknowns, you'll need to find two equations. \n" ); document.write( ". \n" ); document.write( "G+A = 4 2/3 (or 4.667 hours) (equation 1) \n" ); document.write( "G = (1/2)A (equation 2) \n" ); document.write( ". \n" ); document.write( "Use the definition of G (from equation 2) and substitute it into equation 1 to find G: \n" ); document.write( "G+A = 4.667 \n" ); document.write( "(1/2)A+A = 4.667 \n" ); document.write( "Multiply both sides by 2 to rid ourselves of all denominators: \n" ); document.write( "A + 2A = 9.334 \n" ); document.write( "3A = 9.334 \n" ); document.write( "A = 3.11 hours (time it take arwin to do the job alone) \n" ); document.write( "Or, 3 hours 7 mins \n" ); document.write( ". \n" ); document.write( "G = (1/2)A = 1.56 hours (time it takes gian to do the job alone) \n" ); document.write( "Or 1 hour 34 mins \n" ); document.write( " \n" ); document.write( " |