An elevator descends into a mineshaft at the rate of 7 meters per
minute. If the descent starts 10 meters above the ground level, how
long will it take to reach 410 meters below the ground level?
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Answer:
60 min
Step-by-step explanation:
- Rate of descenting= -7m/min
- Start of descent= 10m above the ground/(+10m)
- Distance to be covered= 410+10=420m
- Hence, time needed to reach 420 m below ground level= 420/7
= 60 min
Ans:- It will take 60 minutes to reach 410 min below ground level
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