Question 987145
The cars are separating at 100 mph.
52mph+48mph=100mph
.
25 miles/100mph=0.25 hr 
(0.25 hour)(60 min/hour)=15 minutes.
They will be 25 miles apart in 15 minutes.
15 minutes from 10:30 AM is 10:45 AM.
ANSWER: They will be 25 miles apart at 10:45 AM.