SOLUTION: The age difference between my son and me is 30 years. In 3 years from today , I will be three times as old as my son.What is my age now?

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Question 1150498: The age difference between my son and me is 30 years. In 3 years from today , I will be three times as old as my son.What is my age now?
Found 2 solutions by ikleyn, Alan3354:
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let the son age will be x years.

Then your age is (x+30) years.


In three years . . . 


    (x + 30) + 3 = 3*(x+3).


Simplify and solve


    x + 33 = 3x + 9

    33 - 9 =  3x - x

    24     = 2x

      x    = 24%2F2 = 12.


Thus the son is 12 years old; you are 12+30 = 42 years old.


ANSWER.  You are 42 years old.

Solved.

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There is a bunch of lessons on age word problems
    - Age problems and their solutions
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    - Really intricate age word problems
    - 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.

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    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Age word problems".


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Free of charge online textbook in ALGEBRA-I
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to your archive and use it when it is needed.


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The age difference between my son and me is 30 years. In 3 years from today , I will be three times as old as my son.What is my age now?
-----------
3 times as old ---> 30 is 2x the son's age.
---> 15 & 45 in 3 years.
==================
The hard way:
In 3 years:
D = 3S
D = S + 30
etc.