1. Kayleen's Age Today

In 20 years, Kayleen will be four times older than she is today. What is her current age?

Solution:

Let x = Kayleen's age now

Let x + 20 = Kayleen's age 20 years from now

My Equation:

x + 20 = 4x

Correct?

2. Re: Kayleen's Age Today

x + 20 = 4x means x = 20/3

Looks like problem statement is wrong: "in 30 years" would work.

3. Re: Kayleen's Age Today

Originally Posted by DenisB
x + 20 = 4x means x = 20/3

Looks like problem statement is wrong: "in 30 years" would work.
I went back to the question.

Here it is:

In 20 years, Kayleen will be 1/4 of the age she is today. What is her current age?

My Equation:

x + 20 = (1/4)x

This also leads to a fractional age. I guess using 30 as you suggested makes more sense.

4. Re: Kayleen's Age Today

Originally Posted by DenisB
x + 20 = 4x means x = 20/3

Looks like problem statement is wrong: "in 30 years" would work.
20/3 years = 6 years and 2/3 of a year = 6 years and 8 months. What's wrong with that?

5. Re: Kayleen's Age Today

Originally Posted by Debsta
20/3 years = 6 years and 2/3 of a year = 6 years and 8 months. What's wrong with that?
Ok. Fine.

6. Re: Kayleen's Age Today

Originally Posted by harpazo
I went back to the question.

Here it is:

In 20 years, Kayleen will be 1/4 of the age she is today. What is her current age?

My Equation:

x + 20 = (1/4)x

This also leads to a fractional age. I guess using 30 as you suggested makes more sense.
Does Kayleen get YOUNGER as the years go by? A problem statement should make SOME sense.

7. Re: Kayleen's Age Today

Originally Posted by TKHunny
Does Kayleen get YOUNGER as the years go by? A problem statement should make SOME sense.
Well, we all age as time goes by.

8. Re: Kayleen's Age Today

Originally Posted by harpazo
Well, we all age as time goes by.
So why did you post this:
"In 20 years, Kayleen will be 1/4 of the age she is today. What is her current age?"
If she's 100 today, then she'll be 25 in 20 years?

9. Re: Kayleen's Age Today

Originally Posted by DenisB
So why did you post this:
"In 20 years, Kayleen will be 1/4 of the age she is today. What is her current age?"
If she's 100 today, then she'll be 25 in 20 years?
The error is not mine. This question is found on youtube.com by a tutor, as I have seen, that has made several errors in his video clips.