How long does it take you to work it out? Tackle our brain teaser for a midweek pick- me-up. Tag a friend to see if you can beat their time. #Heights #Thinkbraincare . . . #braincare #brainteaser #brainpuzzle #mathspuzzle #braintraining #riddle #braintrain #mentalworkout #neuroplasticity #braingame #brainpower #trainyourbrain #brainteasers #brainquiz