Final answer:
Rachel's family traveled a total of 211 miles over the three days of their car trip, by adding 68 miles from the first day, 58 miles from the second day, and 85 miles from the third day together.
Step-by-step explanation:
To calculate how many miles Rachel's family traveled in total, we need to add up the miles traveled each day. On the first day, they traveled 68 miles. The second day, they traveled 10 fewer miles than the first day, so that would be 68 - 10 = 58 miles. On the third day, they traveled 85 miles.
Add these numbers together to get the total miles traveled:
- First day: 68 miles
- Second day: 58 miles
- Third day: 85 miles
We calculate the sum:
68 (first day) + 58 (second day) + 85 (third day) = 211 miles
Therefore, Rachel's family traveled a total of 211 miles during their trip.