Final answer:
City B is 2,110 miles east of City A.
Step-by-step explanation:
To find how many miles east of City A is City B, we need to find the total distance between City C and City B and subtract the distance between City C and City A.
Train A travels 300 miles west from City C to City A, so City A is 300 miles west of City C.
Train B travels 2,410 miles east from City C to City B.
To find how many miles east of City A City B is, we subtract the distance between City C and City A (300 miles) from the distance between City C and City B (2,410 miles).
Therefore, City B is 2,110 miles east of City A.