My question is: There are 4 trains waiting at a train station and each train has 4 carriages. Each carriage has 3 rows of wheels and the rows of wheels have 5 wheels each. How many wheels are at the train station? Your thoughts:
Each carriage has 3 rows of wheels * 5 wheels per row = 15 wheels. So each train has 4 carriages * 15 wheels per carriage = 60 wheels. There is therefore a total of 4 trains * 60 wheels per train = 240 wheels at the train station. The final answer: 240.