.
Let x be the present age of her student.
Then Jessa's present age is (x+15) years.
In 15 years . . .
2*((x+15) + 15) = 3*(x+15).
It is your basic equation. Simplify and solve it step by step
2x + 60 = 3x + 45
60 - 45 = 3x - 2x ====> x = 15. <<<---=== the student's present age. ANSWER
CHECK. Then Jessa's present age is 15 + 15 = 30 years. ("Jessa is 15 years older than her student.")
In 15 years: Jessa is 45 years old; the student is 15 + 15 = 30 years old.
2*45 = 90 = 3*30. ! Precisely correct !
Solved. Congrats ! !
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There is a bunch of lessons on age word problems
- Age problems and their solutions
- A fresh formulation of a traditional age problem
- Really intricate age word problem
- Selected age word problems from the archive
- Age problems for mental solution
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.