Question for current students who have taken Econ 1010a and Math 21a

<p>Rising sophomore at Harvard here. I'm currently deciding on one last class to fit into my schedule. For those who have taken Econ 1010a and Math 21a, which would you say was more difficult? More importantly, which one is more time consuming? Q guide scores and comments only tell so much. I was wondering if I could get a more definitive answer from someone who can really compare the two.</p>

<p>Thanks!</p>