# word problem

• Oct 12th 2010, 01:12 AM
anthonye
word problem
Hi all;
don't know how to tackle this type of problem.

Carla is 4 times older than her daugther in 30 years she will be half her age how old are they now?

Thanks.
• Oct 12th 2010, 01:17 AM
mr fantastic
Quote:

Originally Posted by anthonye
Hi all;
don't know how to tackle this type of problem.

Carla is 4 times older than her daugther in 30 years she will be half her age how old are they now?

Thanks.

Daughter's present age = x. Daughter's age in 30 years time = x + 30.

Carla's present age is y. Carla's age in 30 years time is y + 30.

Use the above to form equations from the statements below:

"Carla is 4 times older than her daugther":

"in 30 years she [the daughter] will be half her [Carla] age":

Solve the equations for x and y.
• Oct 12th 2010, 01:38 AM
anthonye
Just don't see it.
• Oct 12th 2010, 01:47 AM
mr fantastic
Quote:

Originally Posted by anthonye
Just don't see it.

You need to make a better effort than that.

What about the equation corresponding to "Carla is 4 times older than her daughter". Surely you can write the equation (did you even look at my definitions for x and y?)
• Oct 12th 2010, 01:53 AM
HallsofIvy
What about the equation corresponding to

Suppose the daughter's age were 5. How old would Carla be?
Suppose the daughter's age were 10. How old would Carla be?

What did you do? Do the same thing with the x and y mr fantastic used.
• Oct 12th 2010, 01:54 AM
anthonye
Yes been looking at this for a bit just can't see word problem solutions don't know why got to go to work now any help is appreciated
thanks again.
• Oct 14th 2010, 03:01 AM
anthonye
Can someone tell me if carla = 30 and her daughter = 7.5.

Thanks
• Oct 14th 2010, 03:43 AM
mr fantastic
Quote:

Originally Posted by anthonye
Can someone tell me if carla = 30 and her daughter = 7.5.

Thanks

This is not correct.

The two equations you need to solve are:

y = 4x .... (1)

x + 30 = (y + 30)/2 .... (2)
• Oct 14th 2010, 12:42 PM
anthonye
Hi are the answers daughter=15 and carla =60.

I sure it must be.
• Oct 14th 2010, 02:58 PM
mr fantastic
Quote:

Originally Posted by anthonye
Hi are the answers daughter=15 and carla =60.

I sure it must be.

You are correct.