SOLUTION: gym is 21 years newer than the auditorium. the gym is also one fourth as old as the auditorium. how old is each building? choices for auditorium age: 26, 27, 28 write and equati

Algebra ->  Expressions-with-variables -> SOLUTION: gym is 21 years newer than the auditorium. the gym is also one fourth as old as the auditorium. how old is each building? choices for auditorium age: 26, 27, 28 write and equati      Log On


   

Question 98530This question is from textbook Algebra structure and Method
: gym is 21 years newer than the auditorium. the gym is also one fourth as old as the auditorium. how old is each building? choices for auditorium age: 26, 27, 28
write and equation to 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!
g=gym's age a=auditorium's age
a=g+21
a=4g
replace a with 4g in the 1st equation: 4g=g+21
subtract g from each side: 3g=21
divide 3 into each side: g=7
a=28
Ed