what motivates ppl?

Thinking about which group solve the problem "quicker", I think group B is the one.

It seems people could be more motivated when they have something to get when they finish the work. However, I just came up with the idea of greed. I think that makes peoples mind messy. When they really need to concentrate on the problem, that might be affect to the people in some way and people would not be think smoothly. Because of that emotion, people might get rushed and get a wrong solution. On the other hand, people have nothing just think about the problems. there is no reason but only the curiosity for the answer and I think that curiosity makes people move. In addition, when no one get nothing when it is finish, there is no rank between them. Therefore, nobody feel fairer or too much pressure on them. I think making good atmosphere is the key to solve the problems.

The candle problem

hummmmmmm... BEATS ME!!!:(

i have no idea what is the answer. i thought i have to do something with the table but it was said i can only use a candle, some matches, and a box holding some thumbtacks so it seems not.
i need a clue anyway.

i think i would my work efficiently when i find what that works for. in other word, i don't feel like start it when i not really sure what it is for so the reason for the work is pretty important for me. Therefor, i think it has benefit to make some treats when i finish it. for example, what i usually do is making a plan for hanging out with my friends after i finish writing report or something. that small thing affects me so much (not always though).
in addition, i just can't feel satisfaction that much. when i finished something big, like school festival maybe i can feel it. however, it is rare. i think i do my work because i have something after that. in my opinion, that work is not the end. it is just a point that i pass.