Latest TCS Aptitude Question SOLUTION: B takes 3 steps forward and 1 step backward while walking. He walks up a stationary escalator in 118 seconds. If it takes a total of 40 sec to reach the top when the escalator is m

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(#M40024863) TCS Numerical Ability question Speed, Distance & Time Keep an EYE

B takes 3 steps forward and 1 step backward while walking. He walks up a stationary escalator in 118 seconds. If it takes a total of 40 sec to reach the top when the escalator is moving, then find the speed of the escalator approximately.

Asked In TCS Maheswari (11 years ago)

Unsolved Read Solution (9)

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Read Solution (9) :

nk gour  (11 years ago)

since first B moves 3 steps forward nd then 1 step backward so in total 4 seconds he moves only 2 steps forward so in 116 seconds he moves 58 steps forward now in next 2 seconds he moves 2 steps so in 118 seconds he moves total 60 steps forward.
so no. of steps required to reach the top of the escalator is 60.
now let d escalator moves a steps per second so in 4 seconds B moves 2 steps(3steps forward nd 1 step backward)in these 4 sec. escalator moves 4a step so in 4 sec. B moves a total of 2+4a step.
so in 40 second total move=10*(2+4a)
so, 10*(2+4a)=60
hence a=1step/sec.

Is this solution Helpfull? Yes (28) | No (6)  

Rajat Gupta  (11 years ago)

Wrong or incomplete question

Is this solution Helpfull? Yes (5) | No (2)  

chetan gupta  (11 years ago)

pls any one explain it properly

Is this solution Helpfull? Yes (3) | No   

will  (11 years ago)

1 step/sec

Is this solution Helpfull? Yes (3) | No   

noopur arora  (11 years ago)

3.9 or 5.9

Is this solution Helpfull? Yes (2) | No (2)  

kamal behl  (11 years ago)

dummy ques

Is this solution Helpfull? Yes (1) | No (4)  

pradeep sain  (11 years ago)

0.9 m/sec

Is this solution Helpfull? Yes | No (4)  

pre  (11 years ago)

suppose it is taking 2 steps in 1 seconds so speed is 2m/s and time is 118 s so distance travelled by b is 118*2= 236
now for for 40 sec it travels 80 m
and speed = 80*40
=3200

Is this solution Helpfull? Yes | No (8)  

sonam verma  (11 years ago)

pls explain

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