question: Sid traveled 110 miles in 2 hours. If Sid then traveled an additional 140 miles in 3 hours, what's the average speed he was traveling?
answer: After traveling 110 miles at first, Sid traveled 110 + 140 = <<110+140=250>>250 miles in total
  Since he spends 3 hours traveling after the first 2 hours, he traveled 3 + 2 = <<3+2=5>>5 hours
  On average, Sid traveled 250 miles / 5 hours = <<250/5=50>>50 miles per hour.
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