document.write( "Question 1064679: I am trying to solve a system word problem by the using the elimination method. \r
\n" ); document.write( "\n" ); document.write( "Della has $160 and saves $7 per week. Cassie has $210 and saves $5 per week. After how many weeks will each person have saved the same amount of money? \n" ); document.write( "

Algebra.Com's Answer #679765 by ikleyn(52787) $\"\"$ $\"About$

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\n" ); document.write( "This problem is NOT about the system of equations.\r
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\n" ); document.write( "\n" ); document.write( "It is solved using ONE equation:\r
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\n" ); document.write( "\n" ); document.write( "160 + 7w = 210 + 5w,\r
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\n" ); document.write( "\n" ); document.write( "where w is the number of weeks.\r
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document.write( "The solution is \r\n" );
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document.write( "7w - 5w = 210 - 160,\r\n" );
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document.write( "2w = 50,\r\n" );
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document.write( "w =  = 25.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Answer. After 25 weeks.\r
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