2 hours 18 minutes.
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Dividing distance by speed gives 160/80 = 2. Therefore, it would take 2 hours to travel 160 kilometres at 80 miles per hour.
160/30 = 16/3 = 5 and 1/3 hours
Time = 350 miles / 160 miles per hour Time ≈ 2.1875 hours However, to express the time in minutes, it's more convenient to convert the decimal part: 2.1875 hours * 60 minutes per hour ≈ 131.25 minutes Therefore, the helicopter will take approximately 131 minutes, or 2 hours and 11 minutes to travel 350 miles at 160 mph.
If you travel 160 miles in 3 hours, your average speed is 53 and one-third miles per hour.
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