(1) Two trains of equal length and moving with the same speed of 54 km/h in opposite directions cross each other in 10 sec. Find the length of the trains.
(2) The speed of a boat in still water is 8 km/h. If the boat covers a distance of 16.5 km upstream in 3 hours, find the speed of the current.
PLZZ HELP..... THANKS!!