SOLUTION: Karen is twice as old as Lori. Three years from now, the sum of their ages will be 42. How old is Karen?

Question 1106120: Karen is twice as old as Lori. Three years from now, the sum of their ages will be 42. How old is Karen?

Answer by ikleyn(52817) (Show Source): You can put this solution on YOUR website!
.

Since "Three years from now, the sum of their ages will be 42",  the sum of their ages now is 42-2*3 = 36 years.


Thus Karen is twice as old as Lori, and the sum of their ages is 36 years.


Hence,  Karen is 24 years old, while Lori is 12.

Solved.

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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.

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