a plane running at a speed of 1200 km per hour takes 6 hours to cover a surname at what speed must it travel in order to complete the journey in 4 hours
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Step-by-step explanation:
A plane running at a speed of 1200km per hour takes 6 hours to cover.
1200 ➗ 6=200
1hour =200km
4hours=?
4 ✖ 200
=800km
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