Please help me solve this question

What is the upper quartile in the box plot?

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

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2