A multistory building had 25 floors above the ground level each of height 5m.It also has
3 floors in the basement each of height 5m.A lift in buildings moves @1m/s.If a man starts from 50m above the ground, how long will it take him to reach at 2nd floor of basement?
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Answer:
Height of 25 floors=25m×5=125m
Depth from the ground to the 2nd floor of the basement=5m×2=10m
Total height=125+10=135m
Time=Distance/velocity
Time=135m/(1m/s)
Time=135sec or 2min 15 sec [Ans]
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