1. The impulse to say 10 cents was there, but solving the equation led to the right answer. 2. Got this right in a few moments by thinking about it (no math).

1. The impulse to say 10 cents was there, but solving the equation led to the right answer. 2. Got this right in a few moments by thinking about it (no math). 3. Instantly knew the answer thanks to having watched "the most important video you'll ever see": https://www.youtube.com/watch?v=F-QA2rkpBSY https://www.youtube.com/watch?v=F-QA2rkpBSY