.
It is simpler to solve this problem MENTALLY, without using equations, than with equations.
Nine years ago, the sum of their ages was 60-2*9 = 42 years,
and Tray was twice the Ja's age.
Then it is OBVIOUS that the Ja's age was 42/3 = 14 years then, and
the Tray's age was 14*2 = 28 years.
Hence, now they are 14+9 = 23 years old (Ja's age) and 28+9 = 37 years old (Tray's age). ANSWER
Solved.
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There is a bunch of lessons on age word problems
- Age problems and their solutions
- HOW TO algebreze and to solve age problems?
- A fresh formulation of a traditional age problem
- Really intricate age word problems
- Selected age word problems from the archive
- Age problems for mental solution
- Age problem for three participants
- Miscellaneous age problems
in this site.
Read them and become an expert in solving age problems.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Age word problems".
Save the link to this online textbook together with its description
Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson
to your archive and use it when it is needed.