document.write( "Question 1191762: Mary is 5 years younger than alison....that total of the 2 girls age is 15.Sherry is 15 years older than Alison,how old is sherry \n" ); document.write( "
Algebra.Com's Answer #823592 by ankor@dixie-net.com(22740)\"\" \"About 
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Mary is 5 years younger than alison..
\n" ); document.write( "m = a - 5
\n" ); document.write( "or
\n" ); document.write( "m - a = -5
\n" ); document.write( "..that total of the 2 girls age is 15.
\n" ); document.write( "m + a = 15
\n" ); document.write( "m - a = -5
\n" ); document.write( "--------------------Adding eliminates a, find m
\n" ); document.write( "2m + 0 = 10
\n" ); document.write( "m = 10/2
\n" ); document.write( "m = 5 yrs is Mary's age
\n" ); document.write( "then \"Mary is 5 years younger than alison..\" therefore:
\n" ); document.write( "a = 5 + 5
\n" ); document.write( "a = 10 yrs is Alison's age
\n" ); document.write( ":
\n" ); document.write( "Sherry is 15 years older than Alison,
\n" ); document.write( "s = a + 15
\n" ); document.write( "s = 10 + 15
\n" ); document.write( "s = 25 yrs is Sherry's age\r
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