Solve a word problem to find the duration of an event.  Both analog or digital clocks are included.

Problem

Daniel started writing a story at 10:17 a.m.10\colon17 \text { a.m.} and finished writing at 10:37 a.m.10\colon37 \text { a.m.}
How long did Daniel write?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
minutes