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I think the test is alright, neither too hard, nor easy. I think E4 would be 65-70+. What do you guys think the raw mark for a state ranker? (like at least?)

I think I converted 5 minutes into hours, so it would be 1/12 hours. u becomes 360*1/12=30km per hr. But I got the same expression (dr/dt) as the suggested answer, however, mine was with unit km per hr. Did I do something wrong?

How are they gonna differentiate the people since this is a simple paper? I bet all state ranker all get full marks. Is it even possible for people who get 68 or 69 to get a state rank (raw mark)?

Oh, alright. Thanks. I hope the unit doesn't matter much.

Why isn't it km/h? That is what I was thinking in the test.

what is the unit for c)ii)?