Question
An airplane flew 7800 km from Country L to Country M at a speed of 780 km/h. It then covered 7200 km from Country M to Country N at a speed of 720 km/h. Find the time taken for the whole journey.
2 m

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An airplane flew 7800 km from Country L to Country M at a speed of 780 km/h. It then covered 7200 km from Country M to Country N at a speed of 720 km/h. Find the time taken for the whole journey.