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An elevator starts on the 100th floor of an building. It descends 4 floors every 10 seconds. At what floor will the elevator be at within 60 seconds?
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An elevator starts on the 100th floor of an building. It descends 4 floors every 10 seconds. At what floor will the elevator be at within 60 seconds?

User Aleksandr Tukallo
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The elevator goes 4 floors every 10 seconds.
That means that in 60 seconds the evaluator will go (4 floors)(6)=24 floors.

Therefore since it starts at 100 and goes down 24 floors you do 100-24=76
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