A building has 25 floors above the ground level each of height 12 feet.It has 3 floorsin the basement each of height 12 feet. A lift in the building moves at the rate 1m/sec. A man starts from 60 feet above the ground. (i) How long will it take him to reach the second floor of the basement?
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Answer:
it wil take 36 min to reach the second floar
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