Question 1078011
Ali's age is between 10 and 30. Currently, Ali's age is two 
digits and is a multiple of 4...<pre>Ali is either 12,16,20,24, or 28</pre>In the following year, his age is...<pre>In the following year his age is either 13,17,21,25, or 29.</pre>...a multiple of 5.<pre>
So in the following year he will be 25, for 25 is the only 
one of those which is a multiple of 5</pre>How old is Ali?<pre>Ali is 24.

Edwin</pre></b>