Answer:
21.58 miles
Step-by-step explanation:
First let's find how many miles Alex walked.
It said "Alex walked five times as many miles as Sue" so lets multiply 3.38 with 5: 3.38 x 5 = 16.9
So, Alex walked 16.9 miles. Now we can find Dan's.
It said "Dan walked 4.68 miles more than Alex" so lets add 4.68 to 16.9: 16.9 + 4.68 = 21.58
So Dan walked 21.58 miles
