Remark
The question becomes "How long does it take her to drive 248 + 93 = 341 miles?"
Answer
Set up a simple proportion.
248/4 = 341/x Cross multiply
248 * x = 4 * 341
248 x = 1364 Divide by 248
x = 1364/248
x = 5.5 hours
But you are only asked about the 93 miles.
Answer: The number of hours for 93 miles is 5.5 - 4 = 1.5
