the group covered the first 70 miles in 10 hours. then it doubled its paceto travel 280 miles. how long did it takethe group to travel 350 miles?

70 mi/h and 140mi/h
350-70 = 280
280 miles left, 140 miles every 10 hours
so 20 hours
20hrs + 10hrs = 30 hrs
it took the group 30 hours to travel 350 miles

sorry, not -1, +1

To solve this question, we can break it down into two parts:

1. Calculate the time it took the group to travel the first 70 miles at a pace of 70 miles in 10 hours.
Since the pace is 70 miles in 10 hours, we can find the speed by dividing the distance by the time: 70 miles / 10 hours = 7 miles per hour.

2. Calculate the time it took the group to travel the remaining 280 miles at a doubled pace.
The pace has now doubled, so the new speed will be twice as fast as before: 7 miles per hour * 2 = 14 miles per hour.
We can calculate the time taken to travel the remaining 280 miles by dividing the distance by the speed: 280 miles / 14 miles per hour = 20 hours.

Now, we add the time it took for the first 70 miles (10 hours) to the time it took for the remaining 280 miles (20 hours): 10 hours + 20 hours = 30 hours.

Therefore, it took the group 30 hours to travel a total distance of 350 miles.