747 on a treadmill conundrum..

[Angrboda]

Not if you read fast as describing the velocity of the axle or center of the wheel, as oppose to tangential velocity at the rim or tread of the tire. As the axle of the wheel move forward at X mph, the treadmill moves backwards at -X mph.

In the absence of any stated reference point for velocity to be measured against, This is how I interpret treadmill moving backwards at the same velocity as the wheel.

I think you're struggling for an interpretation that makes sense of nonsense. You're over-interpreting.

The question is simply badly worded. So badly worded that it yields two contradictory conclusions, both of which are consistent with the wording of the question. One which relies on a literal interpretation of the phrase about the conveyor belt, the other of which relies upon trying to interpret what the author meant, ignoring the literal implication of what was actually said.