SOLUTION: A man is 4 times old as his daughter was 3 years ago.If their combined ages is 48,how old is the daughter now?

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Question 1031850: A man is 4 times old as his daughter was 3 years ago.If their combined ages is 48,how old is the daughter now?

Found 7 solutions by stanbon, mananth, MathTherapy, Alan3354, ikleyn, n2, josgarithmetic:
Answer by stanbon(75887) About Me  (Show Source):
Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!
let the daughter's age be x now
3 years ago her age was (x-3) years
Father's age now is 4(x-3)
4(x-3)+48
4x-12=48
4x=12+48
4x=60
x=15 years the daughter's age

Answer by MathTherapy(10719) About Me  (Show Source):
You can put this solution on YOUR website!

A man is 4 times old as his daughter was 3 years ago.If their combined ages is 48,how old is the daughter now?
Daughter's current age: highlight_green%2812%29 


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A man is 4 times old as his daughter was 3 years ago. If their combined ages is 48, how old is the daughter now?
---------------
M = 4*(D - 3) = 4D-12
M + D = 48
----
4D-12 + D = 48
5D = 60
D = 12 (Daughter's age now)

Answer by ikleyn(53618) About Me  (Show Source):
You can put this solution on YOUR website!
.
A man is 4 times highlight%28highlight%28as%29%29 old as his daughter was 3 years ago.
If their combined ages is 48,how old is the daughter now?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


        The solution in the post by @mananth is incorrect.
        It is incorrect, since his setup equation is wrong.

        I came to bring a correct solution.


Let the daughter age be x now.
3 years ago her age was (x-3) years.
Father's age now is 4(x-3)


Our equation is

    x + 4(x-3) = 48    (the combined age)


Simplify and find x

    x + 4x - 12 = 48

      5x        = 60

       x        = 60/5 = 12.


ANSWER.  The daughter is 12 years old.  The father is 4(x-3) = 4*(12-3) = 4*9 = 36 years old.


CNECK.  Their combined age is 12 + 36 = 48,  which is precisely correct.

Solved correctly.



Answer by n2(54) About Me  (Show Source):
You can put this solution on YOUR website!
.
A man is 4 times highlight%28highlight%28as%29%29 old as his daughter was 3 years ago.
If their combined ages is 48,how old is the daughter now?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


Let the daughter age be x now.
3 years ago her age was (x-3) years.
Father's age now is 4(x-3)


Our equation is

    x + 4(x-3) = 48    (the combined age)


Simplify and find x

    x + 4x - 12 = 48

      5x        = 60

       x        = 60/5 = 12.


ANSWER.  The daughter is 12 years old.  The father is 4(x-3) = 4*(12-3) = 4*9 = 36 years old.


CNECK.  Their combined age is  12 + 36 = 48,  which is precisely correct.



Answer by josgarithmetic(39736) About Me  (Show Source):
You can put this solution on YOUR website!
                       Three years ago         Now

MAN                        -                   4(d-3)

DAUGHTER                   d-3                  d

SUM                                            48

4%28d-3%29%2Bd=48

4d-12%2Bd=48
5d=48%2B12
5d=60
highlight%28d=12%29, daughter's age