Which item has a unit rate of $6.50?
O caps: 4 for $25.00
o posters: 3 for $20.25
o tote bag: 4 for $30.00
O T-shirts: 5 for $32.50

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