Google Interview Riddle - 3 Friends Bike and Walk || Logic and Math Puzzle

Google interview puzzle : Three brothers Alex, Bob and Carl travel to visit their uncle who lives exactly 300 kms away from their house, to celeberate his birthday. They have a motorbike (bike) which can carry a maximum of two persons at a time. Assume that the bike has a constant speed of 60 km/hr. Each brother can walk at a speed of 15 km/hr. The brothers are brilliant logicians, just like you. If, they all start from their house at the same time. what is the shortest possible time in which they all can reach their destination. Pause the video and think logically. It's an amazing Google interview riddle to challenge your intelligence. So if you are looking for a job at Google, please study optimization based puzzles in detail. You can share puzzles and riddles with me on these links: Gmail : logicreloaded@ Facebook(message) : Also try these brilliant mind blowing puzzles: 5 Pirates PUZZLE (Version 2) | 100 Gold Coins 5 Pirates Trains & Bird Puzzle || Challenge for Math and Aptitude lovers Very Tricky Race Puzzle