SOLUTION: The gym is 21 years newer than the auditorium. The gym is also one fourth as old as the auditorium. How old is each building?

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Question 154915This question is from textbook Algebra Structure and Method
: The gym is 21 years newer than the auditorium. The gym is also one fourth as old as the auditorium. How old is each building? This question is from textbook Algebra Structure and Method

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let g=age of gym, a=age of auditorium
g=a-21
g=a/4
a-21=a/4
4(a-21)=a
4a-84=a
3a=84
a=28
g=7
.
Ed