Last month Gianna used 6GB out of the 8GB included in his cell phone plan. Lamar used 4GB out of the 5GB included in his plan. Who used a greater percent of his data?

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