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Depth of product line means that the store carries a large assortment of each item, such as a shoe store that offers running shoes, dress shoes, and children's shoes.
A train can cross a pole, a bridge of 510 meter long and platform of 450 meter long in 11 seconds, _____ seconds and 26 seconds, respectively.
If a train takes 24 seconds to cross a pole and 36 seconds to cross a 180 metres long bridge, what is the speed of the train?
A train passes an electrical pole in 18 seconds and passes a platform 350 m long in 60 seconds. Find the length of the train.