Question 970266
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T=Travis's age; B=Brian's age=T+30yrs
T+B=60 years Substitute for B.
T+T+30 yrs=60 yrs 
2T=30 yrs
T=15 yrs ANSWER 1: Travis is 15 years old.
B=T+30yrs=15yrs+30yrs=45yrs ANSWER 2: Brian is 45 years old.
.
CHECK:
T+B=60 yrs
15 yrs+45 yrs=60 yrs
60 yrs=60 yrs