Janice walks a total of 7/8. She walks at a rate of 1 mile every 1/4 hour. How many miles did she walk?
To find the total number of miles Janice walks, we need to find the number of 1/4 hour increments that make up 7/8 hour. 7/8 hour is equal to 7/8 / 1/4 = 7/8 * 4/1 = <<7/8*4/1=7/2>>7/2 = 3.5 increments
Janice walks 3.5 * 1 = <<3.5*1=3.5>>3.5 miles. Answer: \boxed{3.5}.