A boat moving upstream takes 8 hours 48 minutes to cover a distance while it takes 4 hours to return to the starting point, downstream.
What is the ratio of the speed of boat in still water to that of water current?
In a certain code language, 'tim pac' means 'red colour', 'pit it tim' means 'red and black' and 'nac pit' means 'yellow black'.
Which word in that language means 'and'?