Question 230831
Hello, 

Let's set up an example. 

Joe is 12 years old and someone else is 2/3 older. 

2/3 of 12 is 8 years old.   (Multiply 2/3 times 12)

Therefore, the other person is 20 years old because you add 8 and 12. Here's what it would look like in algebra:

                  2x/3 + x = the age of the older person. 

Put an age in for x and you'll see how old the other person is. 

Note: if the problem said 2/3 younger then it would look like this:

                  2x/3 = age of the younger person

RJ Toftness
Author of "Unlock the Mystery to Math"
www.math-unlock.com