Question

a multi storey building has 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 building moves at a rate of 1m/5 . if a man starts from 50m above the question ,how long will it take him to reach at 2nd floor of basement ?​

Answer 1

Answer:

Each floor has the height of 5m and basement of 3 floors.

If a man starts from 50m above ground and reached at 2nd  floor of basement. 

Distance traveled above basement =50 m

And below basement =2×5=10 m

Total distance traveled=(50+10)m=60m

Rate of moving of a lift =1m/s 

that is in 1 second it moves 1 metre.

So, time taken to reach 60 metre =60×1=60 s

Hence, a man reaches at 2nd  floor of basement in 60 seconds.