Dual degree/switching schools

<p>Hi everyone! I was accepted to Michigan's engineering school during early action, and I'm most likely going to attend. I have a few questions about getting a dual degree/switching schools. Any information would be greatly appreciated! </p>

<p>How realistic is it to get a dual degree for chemical engineering and math or econ and still graduate in 4 years without studying 24/7? Do these majors share any required classes? </p>

<p>How soon should I start taking classes for my second major (math/econ) if I decide to get a dual degree?</p>

<p>What will I need to do if I decide after a semester or a year that I want to switch from engineering to LSA completely (is it really as easy as people say?)</p>

<p>Thanks!</p>