An elevator descends into a mine shaft at the rate of 6 m/min. If the descend starts from 20 m
above the ground level, how long will it take to reach 310 m?
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Step-by-step explanation:
Answer: 65 minutes or 1 hour and 5 minutes. Descends starts from 20 m above the ground level.
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rate= 6m/ min
from 20 m to 310 m total distance covered is 290m.
time= distance / speed
= 290/ 6
=48.33minutes
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