Posted by **susie** on Wednesday, May 2, 2007 at 8:06pm.

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

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