Answer:
To compare the distance traveled by Kevin and Katie's families on the first day of travel, we need to calculate the actual distances traveled by each family.
Kevin's family drove 3/5 of the total 850 miles on the first day of their trip, which is:
(3/5) * 850 = 510 miles
Katie's family drove 62% of the total 800 miles on their first day of travel, which is:
0.62 * 800 = 496 miles
Comparing the two distances, we see that Kevin's family traveled a greater distance on the first day of their trip, with 510 miles compared to Katie's family's 496 miles.
Therefore, the answer is:
Kevin's family traveled a greater distance on the first day of travel.