Answer:
23.2 miles
Explanation:
Since a round trip from City A and City B is 150 miles, we already know that the distance between the two cities is 75 miles.
When you travel 46.8 miles towards City B and stay in City C, you are 28.2 miles away from City B because 75 - 46.8 = 28.2
Since the miles to get to the city are less than what is stated in the question (46.8), we're gonna simplify.
46.8 - 28.2 = 23.2
The 28.2 miles are the miles remaining to get to City B. This shows that the 46.8 miles were spent driving towards City B and driving away from City B. The 23.2 miles were spent driving away, towards City D. This shows that City D is 23.2 miles away from City B.