document.write( "Question 1200145: A teacher was asked by her students how old she is. She said ok but they have to solve the following problem from the information given. “My son is 24 years younger than I am. He, in turn is 25 years older than my grandson. My grandson and I together are 73 years old.
\n" ); document.write( "How old is the teacher? \n" ); document.write( "
Algebra.Com's Answer #834175 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
t = teacher's age
\n" ); document.write( "s = teacher's son's age
\n" ); document.write( "g = teacher's grandson age
\n" ); document.write( "s = t - 24
\n" ); document.write( "s = g + 25
\n" ); document.write( "t + g = 73
\n" ); document.write( "from s = t - 24, solve for t to get t = s + 24
\n" ); document.write( "from s = g + 25, solve for g to get g = s - 25
\n" ); document.write( "in t + g = 73, replace t with s + 24 and replace g with s - 25 to get s + 24 + s - 25 = 73
\n" ); document.write( "combine like terms to get 2s - 1 = 73
\n" ); document.write( "add 1 to both sides of the equation to get 2s = 74
\n" ); document.write( "solve for s to get s = 74 / 2 = 37
\n" ); document.write( "since t = s + 24, then t = 37 + 24 = 61
\n" ); document.write( "since g = s - 25, then g = 37 - 25 = 12
\n" ); document.write( "your solution is that the teacher's age is 61
\n" ); document.write( "her son is 24 years younger than her, so her son's age is 61 - 24 = 37
\n" ); document.write( "her grandson is 25 years younder than her son, so her grandson's age is 37 - 25 = 12.
\n" ); document.write( "the solutionis confirmed to be good.\r
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