Hi tt,
Not a bad first effort, just missed one fitting and you can see in extreme cases how it can make a difference, but better than my first effort. I think I was copying of the lad next to me in class, then when he was off I was lost. Gone from second best in the class to dunce! But it's all about practise,knowledge and confidence. If you keep at it, it will click!
Like I said not a trick question just basic calcs. That was the reason for 35,40,50,60 and 70 watt lamps. Timesing everything by a 100 hardly tasking. But when you become more advanced that will all be explained to you and come second nature.
Good Luck with course and i'll look up the training college, can't say I know a lot about it. I have no doubt someone will.
KB