SOLUTION: A man is 12 times as old as his son. In 9 years time, he will be only 3 times as old as his son. How old are each?

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Question 1177939: A man is 12 times as old as his son. In 9 years time, he will be only 3 times as old as his son. How old are each?
Found 4 solutions by mananth, ikleyn, josgarithmetic, MathTherapy:
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website!
check the problem

Answer by ikleyn(52800)   (Show Source):
You can put this solution on YOUR website!
.
A man is 12 times as old as his son. In 9 years time, he will be only 3 times as old as his son.
How old are each?
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Let x be the son's age; then the father's age is 12x. In 9 years 3*(x+9) = 12x + 9. Simplify and solve 3x + 27 = 12x + 9. 27 - 9 = 12x - 3x 18 = 9x x = 18/9 = 2 years old. ANSWER. The son is 2 years old; the father is 12*2 = 24 years old.

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.

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Ignore the post by @Mananth --- it is IRRELEVANT.

70% of his (or her) writing is EITHER wrong OR irrelevant.

Answer by josgarithmetic(39620)   (Show Source):
You can put this solution on YOUR website!

-

Answer by MathTherapy(10552)   (Show Source):
You can put this solution on YOUR website!

A man is 12 times as old as his son. In 9 years time, he will be only 3 times as old as his son. How old are each?

Correct answer:
Don't know what WORLD the other person is in!!