Ahorse might drink 50l, a sheep might drink 4l and a chicken might drink 200ml. how much water would a farm with 3 horses, 15 sheep, and 12 chickens need for a day?

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