maths question (my whole office has been trying to solve this question, that some one child got for home work)

Question

my mum was 27 when i was born, 8 years ago she was twice the age i will be in 5 years time, how old am i?

Answer 1

9 years old simple algebra: me +27 -8 = 2(me+5), where me = my age...solve for me

Answer 2

My mom was 27 when I was born, let x be the child's age, and y be the age of the mom, then y = x + 27.


8 years ago she was twice the age the child will be in 5 years time:

y-8 =2* (x+5)

y - 8 = 2x + 10, substitute for y , the value x+27

x+27 -8 = 2x + 10
27-8-10 = x
9 = x

Answer 3

If x=child's current age, then 27+x=mum's current age.8 years ago mum's age was (27+x)-8 which is equal to 2(x+5)=twice the age the child will be in 5years time.So:
(27+x)-8=2(x+5)
27+x-8=2x+10
x=27-8-10
x=9

Answer 4

You will be 9 years old. The simple equation is 8-5=3 27/3=9.

Answer 5

M=mothers age
C= child's age

M = C + 27 Based on age at birth
M - 8 = 2 x (C+5)

Substituting for M

C + 27 - 8 = 2C + 10
C = 9

So the child is currently 9 years old and the mother is now 36.

i.e. 36-8 = 28
2 x (9+5) = 28

Answer 6

9

Answer 7

Let us take this by this techniqq..
Let these pairs of numbers correspond to:
(your age, mum's age)
When you were born (0,27)
After 1 yr (1,28)
After 2 yrs (2,29)
After 3 yrs (3,30)
After 4 yrs (4,31)
....
After x yrs (x, x + 27)
...

Now, if we let x yrs from the year you were born as the present time, your present age is x, which we will solve for the value later on. From this we can also infer that your mum's present age is x + 27.

Now we have the ff:
x = your present age
x + 27 = your mum's present age

Now,
(x + 27) - 8 = your mum's age 8 yrs ago
x + 5 = your age in 5 yrs time

It says that 8 years ago she was twice the age i will be in 5 years time, so
(mum's age 8 yrs ago) = (2) times (your age in 5 yrs time)
(x + 27) - 8 = 2 · (x + 5)

We can solve for the equation as follows:

On the left side, remove parentheses, and on the right distribute the 2 (remember that multiplication distributes over addition)
x + 27 - 8 = 2 x + 10

We combine like terms on the right side ( since 27 - 8 = 19)
x + 19 = 2x + 10

We "transpose" (change position) the 2x to the left, and the 19 to the right (remembering to change signs whenever transposing)
x - 2x = 10 - 19

We combine like terms again
-x = -9

We remove the neg. sign. Therefore,
x = 9

Therefore, you are 9 yrs old now.

^_^

Answer 8

ur X ur mum is X+27; (X+27-8)=2(X+5)...twice u+5 yrs is mum less 8 yrs...ur 9.. 8 yrs ago mum was 28 & in 5 yrs time u will be 14..(9+5) then...1/2 her age

Answer 9

x = the age of the son today
x+27= the age of the mother today

From the info given we construct the equation:
x+27-8=2 (x+5)
....x=9

Answer 10

13