document.write( "Question 801791: This one is for u genius. A gal went to school & the teacher asked how old are u? She replied I don't know, bt I know that I'm half my mother's age. The teacher asked ok how old is yor mother? She said I don't know bt I know that my Dad is 5 yrs older than my mother. Teacher, how old is yor dad? She said I don't know bt I know that if we we add our ages the answer is 100 yrs... Nw how old is the gal, her mum & her dad??? Good luck \n" ); document.write( "
Algebra.Com's Answer #483644 by ankor@dixie-net.com(22740)\"\" \"About 
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I'm half my mother's age.
\n" ); document.write( " my Dad is 5 yrs older than my mother.
\n" ); document.write( " if we we add our ages the answer is 100 yrs...
\n" ); document.write( " how old is the gal, her mum & her dad???
\n" ); document.write( ":
\n" ); document.write( "Shouldn't be hard, we have three statements for 3 unknowns
\n" ); document.write( "g = .5m
\n" ); document.write( "d = m + 5
\n" ); document.write( "g + m + d = 100
\n" ); document.write( "Replace g with .5m, replace d with m+5
\n" ); document.write( ".5m + m + (m+5) = 100
\n" ); document.write( "2.5m = 100 - 5
\n" ); document.write( "2.5m = 95
\n" ); document.write( "m = 95/2.5
\n" ); document.write( "m = 38 is Mom's age
\n" ); document.write( "you can find g and d, I'm sure \n" ); document.write( "
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