document.write( "Question 245730: how can i divide $80 between 3 people so that the second person will have twice as much as the first and the third person will have $5 less then the second person.\r
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document.write( "ex. of how to set up ....\r
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document.write( "1st person- x+2
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document.write( "2nd person- x
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document.write( "3rd person- 5-x\r
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document.write( "thanks. \n" );
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Algebra.Com's Answer #179451 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! let a= first person \n" ); document.write( "b=second person \n" ); document.write( "c=third person \n" ); document.write( "a+b+c=80 \n" ); document.write( "b=2a \n" ); document.write( "a=b/2 \n" ); document.write( "c=b-5 \n" ); document.write( "three variables and three equations \n" ); document.write( "substitute \n" ); document.write( "b/2+b+b-5=80 \n" ); document.write( "combine \n" ); document.write( "2.5b=85\r \n" ); document.write( "\n" ); document.write( "multiply both sides by 2 \n" ); document.write( "5b=170 \n" ); document.write( "divide both sides by 5 \n" ); document.write( "b=34 \n" ); document.write( "a=17=b/2 \n" ); document.write( "c=29=b-5 \n" ); document.write( "34+17+29=80 \n" ); document.write( " |