Frustrating being old!

I've decided to go back to school and enjoy my time away from the working world. Entering into culinary classes at the age of 53 has been exciting, yet I am feeling my age. Granted, I work in a technologically advanced field, with all the greatest new toys known to the world, dedicated servers, top of the line computers...I'm surrounded during the majority of my working hours. Here I sat at my dining room table last night taking an online quiz...a week ago seem daunting to even access it. It was all concerning math, conversions, etc. I finished the 13 questions, felt resonably confident in the answers, clicked on the button saying I was finished. Only one question really confused me...more on that later. The score: 0%. That is right. Now I am questioning myself on what I did wrong. Luckily, this online service allows you to see the right answers. Now, back in my days of taking tests (30+ years ago), an answer such as: how many teaspoons in a tablespoon would have the correct, full answer as 3 teaspoons. No, in this computerized age if you answer 3 teaspoons you are incorrect. The correct answer by their standard is simply 3. I had attached the unit specifications onto the numerics, thus a zero on my score. In this age of computerized teaching aids, there is also the opportunity to go back and take the quiz again. This time: 100%. That was better. Although I still do not agree with the answer to question 13: What is the weight of a fish weighing 10 pounds plus half it's weight? To me, this was a trick question....a 10# fish always weighs in at 10#...unless you are talking about it being dressed out, de-headed, tailed, etc. Or I can see if you thought to add the 5# weight, making it 15#. But in this case, the correct answer was 20#. For that explaination, I will be in class next Monday evening again............until then, all I can think about now is wanting to catch a 10# fish! OH, to be warm again, floating in a boat and your biggest concern is whether you will get it into the net before it slips off its hook and back into the waters.