How long would it take for a penny dropped rom the top of the Empire State Building to reach the ground if the building is 1,249ft tall? (3.28ft=1m) Round your answer to 3 significant figures. (please show the formula used and all work!)

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?