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Yip

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Distance : 350000km < 4000000km < 450000km(to the nearest 1000000km) Average speed : 3250km/h < 3500km/h < 3750km/h(to the nearest 500km/h) Since, Time = Distance/Speed. Therefore, least time = 350000km / 3750km/h (lower bound) greatest time = 450000km /
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