document.write( "Question 970849: when Christine was born her mother was 25 years old. Three years ago her mother was 6 times as old as Christine. Find Christine's present age. \n" ); document.write( "

Algebra.Com's Answer #593512 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Let c = Chis's age
\n" ); document.write( "let m = Mom's age
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\n" ); document.write( "Write an equation for each statement, simplify as much as possible
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\n" ); document.write( "when Christine was born her mother was 25 years old.
\n" ); document.write( "m = c + 25
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\n" ); document.write( " Three years ago her mother was 6 times as old as Christine.
\n" ); document.write( "m - 3 = 6(c - 3)
\n" ); document.write( "m - 3 = 6c - 18
\n" ); document.write( "m = 6c - 18 + 3
\n" ); document.write( "m = 6c - 15
\n" ); document.write( "Replace m with with (c+25) from the 1st statement
\n" ); document.write( "c + 25 = 6c - 15
\n" ); document.write( "25 + 15 = 6c - c
\n" ); document.write( "40 = 5c
\n" ); document.write( "c = 40/5
\n" ); document.write( "c = 8 yrs is Chris's age
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\n" ); document.write( ":
\n" ); document.write( "Check this:
\n" ); document.write( "Find Mom's age and check the solutions in the 2nd statement
\n" ); document.write( "\"Three years ago her mother was 6 times as old as Christine.\"
\n" ); document.write( "m = 8 + 25 = 33 yrs
\n" ); document.write( "then
\n" ); document.write( "33 - 3 = 6(8 - 3)
\n" ); document.write( "30 = 6(5) \n" ); document.write( "

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