A multi-storey building has 25 floors above the ground level each of height 5 m .It also
has 3 floors in the basement each of height 5m .A lift in the building moves at a rate of
1m/s. If a man starts from 50 m above the ground .how long will he take to reach upto
the 2
nd floor of the basement?
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1
Answer:
70 sec
Step-by-step explanation:
distance above ground level = 50 m
distance below ground level the man travel= 2×5
= 10
total distance = 50 + 60 m = 70 m
time taken = 70 ÷ 1 = 70 secs = 1min 10 sec
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