Final answer:
Ellie's family hiked a total of 1 3/8 miles on trails that are a) 1 3/8 miles long.
Step-by-step explanation:
Ellie's family hiked on trails that are 1 3/8 miles long.
To find out how far they hiked, we can multiply the number of trails by the length of each trail.
Since they hiked on trails that are 1 3/8 miles long, we can represent this as a fraction: 1 3/8.
To multiply a fraction by a whole number, we simply multiply the numerator (top number) and keep the denominator (bottom number) the same.
So we have:
1 3/8 * 1 = 1 3/8
Therefore, Ellie's family hiked a total of 1 3/8 miles.