Question 1093907
.
Aaron is four more than one-half as old as Hunter. Kevin is thirty-one less than four times the age of Aaron. 
In five years, Kevin will be twenty-five less than three times the age of Aaron. How old is Kevin?
~~~~~~~~~~~~~~~~~~~~~~


<pre>
From the condition, you have these two equations

K = 4A - 31,              (1)
K+5 = 3*(A+5)-25.         (2)

Substitute K from (1) into (2) to get an equation for A:

(4A-31) + 5 = 3*(A+5) - 25,

4A - 26 = 3A - 10,

4A - 3A = 26 - 10 = 16  ====>  A = 16.


Aaron is 16 years old now.
Kevin is 4*A - 31 = 4*16-31 = 64-31 = 33.


<U>Answer</U>.  Kevin is 33 years old now.
</pre>

The info related to Hunter is not relevant to the question.