Complex sentence: But the "free floating" hypothesis presented its own difficulties; it did not explain the ten bills missing from one packet, nor was there a logical reason that the three packets would have remained together after separating from the rest of the money.
Split into simpler sentences: But the "free floating" hypothesis presented its own difficulties; it did not explain the ten bills missing from one packet. Nor was there a logical reason that the three packets would have remained together after separating from the rest of the money.