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"C" is the correct answer.
I agree with pretty much everybody here in that the wording on this question probably creates more questions.
Yes, it came from an Algebra test. When I first saw this one it seemed easy: Divide the distance by the time and you get the speed. For my logic process, how can the plane be traveling at 1225km/hr and only go 4200km in four hours?
I compare it to driving.
If I am going 60mph in my car with cruise control on, for four hours straight (without stopping) I would travel 240 miles. Drag, wind speed, tailwind/headwind, drafting behind a semi, etc. makes no difference. I still travel 240 miles in four hours.
The only thing that changes is the efficiency of my trip, i.e. mpg.
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Before you criticize someone, you need to walk a mile in their shoes. That way, if they get angry at you.......you're a mile away.......and they're barefoot.
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