Q1
This doesn't require any calculations. You are on the 225 radial from the VOR so it is magnetic. Variation west magnetic best, so you are on the 180 True radial, i.e. south of the VOR. This tells you that you are on the same meridian of longitude, 043 15W.
You are at 10d from the VOR so you have to be at a lower latitude than the VOR.
Only answer C fits.
Q2
I have seen this before but can't remember it right now, I will have a think unless someone beats me to it.
Q3
This is a whiz wheel question. You need to find the groundspeeds from the information given. From your initial groundspeed you can calculate your distance from waypoint B.
Once you have worked out the difference between the 2 mach speeds given it should be a simple distance, speed and time calculation.