document.write( "Question 500868: Darrell has $2 less than five times as much money as Bob. Mary has as much money as Darrell ans Bob together. If all three of them together have $80, how much does Mary have? \n" ); document.write( "
Algebra.Com's Answer #338310 by geetha_rama(94)\"\" \"About 
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Let x be the amount that Darell have. y be the amount that Bob have and z be the amount that Mary have.\r
\n" ); document.write( "\n" ); document.write( "x + y + z = 80 -> equation 1 (All three of them have $80 in total)
\n" ); document.write( "x = 5y -2 -> equation 2 (Darell has $2 less than five times the money bob have)
\n" ); document.write( "z= x+y -> equation 3 (Mary has sum of Darell and Bob's money)\r
\n" ); document.write( "\n" ); document.write( "substituting equation 3 in equation 1,
\n" ); document.write( "we have
\n" ); document.write( " x + y + x+ y = 80
\n" ); document.write( "2x + 2y = 80\r
\n" ); document.write( "\n" ); document.write( "=> x+y=40
\n" ); document.write( " x-5y = -2 ( from equation 2)\r
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\n" ); document.write( "\n" ); document.write( "subraticting above two equations,
\n" ); document.write( " -6y = -42
\n" ); document.write( "=> y = 7
\n" ); document.write( " x = 5y -2 = 35 -2 = 33
\n" ); document.write( " Z = x+y = 40
\n" ); document.write( "Darell has $33, Bob has $7 and Mary has $40\r
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