50 (number)

50 was a number.

Edward Waterfield paid Keith Parry fifty pounds per week to work in his antiques shop. (TV: The Evil of the Daleks)

Unpaid taxes to the Company carried a further fifty per cent compound interest rate. (TV: The Sun Makers)

The temple of Ishtar in Kish was 250 feet long and 50 feet wide. (PROSE: Timewyrm: Genesys)

References in invalid sources
The Doctor's Five Hundred Year Diary referenced "[ sums] of human knowledge" of 25%, 50%, 75%, and 100%. (NOTVALID: Tom Baker stars in John Lloyd's lost Doctor Who adventure, The Doomsday Contract)