document.write( "Question 164140: Nicole is 72 years younger than 2 times Cathy's age. Maria is 144 years younger than 3 times Cathy's age. In 6 years Nicole will be 40. In six years how old will Maria be? \n" ); document.write( "
Algebra.Com's Answer #120953 by ankor@dixie-net.com(22740)\"\" \"About 
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Let, N, C, M, be their ages now
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\n" ); document.write( "Write an equation for each statement:
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\n" ); document.write( "Nicole is 72 years younger than 2 times Cathy's age.
\n" ); document.write( "N = 2C - 72
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\n" ); document.write( " Maria is 144 years younger than 3 times Cathy's age.
\n" ); document.write( "M = 3C - 144
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\n" ); document.write( " In 6 years Nicole will be 40. In six years how old will Maria be?
\n" ); document.write( "N + 6 = 40
\n" ); document.write( "N = 40 - 6
\n" ); document.write( "N = 34 yrs now
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\n" ); document.write( "Substitute 34 for N in the 1st equation, find C
\n" ); document.write( "2C - 72 = 34
\n" ); document.write( "2c = 34 + 72
\n" ); document.write( "2C = 106
\n" ); document.write( "C = \"106%2F2\"
\n" ); document.write( "C = 53 is C's age now
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\n" ); document.write( "Using the 2nd equation, substitute 53 for C and find M
\n" ); document.write( "M = 3(53) - 144
\n" ); document.write( "M = 159 - 144
\n" ); document.write( "M = 15 yrs is M's age now and in six yrs she will be 21 yrs\r
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