Question

42.Every floor of a 20 storey building is 5m high. If a lift moves 2m every second, how
long will it take to move from third floor to fifteenth floor?

Answer 1

Answer:

no of floors from 3 to 15 = 13

distance between each floor = 5m

speed of lift = 2m/sec

distance between 3rd floor to 15th floor = 5 * 13 = 65m

time = distance/ speed

time = 65/2

time = 32.5 seconds it would take the lift 32.5 seconds to move from 3rd floor to 15th floor

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Answer 2

Answer:

30 second in the answer