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An elevator descends into a mine shaft at the rate of 6 m/min. If the descent starts from 10 m above the ground level, how long will it take to reach – 350

NCERT Class 7th Mathematics Chapter 1 Integers


Speed of the elevator=6 m/min
total distance =350 + 10 =360m(as it starts from 10m above the ground level)
time taken=(360÷6)=60min
or 1hour ans.
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