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Mr. Shah decided to walk down the escalator of a tube
station. He found that if he walks down 26 steps, he
requires 30seconds toreach the bottom. However, if he steps
down 34 stairshe would onlyrequire 18 seconds to get to the
bottom. If the timeis measured fromthe moment the top step
begins to descend to thetime he steps offthe last step at
the bottom, find out the height ofthe stair way in steps?
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Answer Posted / siva
If he walks 26 steps , he requires 30 sec to reach bottom. If he walks 34 steps he requires 18 sec to reach bottom.
So walking (34-26)=8 steps he requires (30-18)= 12 secs.
In one sec he walks ( 8/12)= 2/3 steps
34 steps requires 18 sec
so 2/3* 18 =12
In remaining 18 secs he walks 12 steps 34+12 = 46 steps
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