<p>Sorry that I didn’t specify, I am in Bus Econ major (college of letter and Science) not Chem or Physis class that we don’t have any lab. I also use classes in Berkeley (econ also) to compare. The result was, 4 Units in LA = 2.5 hour. 4 Units in Ber = 4.5 hours (doesn’t matter quarter or semester)</p>