Khan/khan-exercises — pull request #18106 by imranghory (2012-03-31 15:47:51+00:00)
Title: Add an "almost correct" for users on telling time

Fix for #18057 #17998 #17688 #17469 #17479 #17445 #17548 #17406 #17239 #17093 (and many others - most of the telling time bugs are this issue)

Many users place the hour hand at precisely hour intervals rather than the appropriate point between hours, so for 6:45 they would put the hour hand at precisely 6. And when they submit this as their answer they get a "wrong" response and end up frustrated because they're certain they're correct.

This fix detects that scenario and gives an "almost correct" message and provides a hint to tell them they need to adjust the hour hand.