Munchkin

Mathematics

19 January, 11:10

expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far (in miles) is train #12 from the downtown sation and how long (in minutes) has the #12 train been traveling