Latest vinsol Aptitude Question SOLUTION: A woman lives in a 36 floor building. There is a lift in that building. When she leaves her aprtment and goes to lift,there are 3 times chances lift will take her up than take her

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(#M40038086) VINSOL Numerical Ability question Aptitude Question in Vinsol Keep an EYE

A woman lives in a 36 floor building. There is a lift in that building. When she leaves her aprtment and goes to lift,there are 3 times chances lift will take her up than take her down(3:1,up:down)..On which floor she lives?

Asked In vinsol varun dua (9 years ago)

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Read Solution (10) :

Vivek Jain  (9 years ago)

Let the woman Lives on X numberth floor.
P(down)=X/36
and P(up)=(36-X)/36
acc. to question P(up) = 3*P(down)
=> (36-X)/36 = 3 * X/36
=>X=9 answer

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Amit Toor  (9 years ago)

answer 9 is wrong bcoz there are 35 floor+ ground floor counting 36 floor building. so the ans will be 9-1=8th floor.

Is this solution Helpfull? Yes (1) | No (6)  

varun dua  (9 years ago)

I answered 10th floor.

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jyoti mahansaria  (9 years ago)

In vinsol test paper of 13 aug the marked this ans 9th floor wrong

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abhishek tiwari  (9 years ago)

27 is d ans

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PANKAJ VARUN  (9 years ago)

3:1 being the ratio, (3/4)*36 =27, which gives 36-27=9.The chances are in the ratio of 3:1 = 27:9. Therefore 9th floor seems plausible :D.

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tamanna arora  (9 years ago)

9th floor

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Dhruv  (8 years ago)

Ans 12 36/3 = 12

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Kirti Agrawal  (8 years ago)

answer is 8

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JYOTI AGARWAL  (4 years ago)

Given that there are 3 times the chances that the lift will take the woman up than take her down.
Up:Down=3:1
It can be inferred that the probability that the lift takes her up = 3 / (3+1) = 3/4
And the probability that the lift takes her down from her floor = 1 / (3+1) = 1/4
Now let the woman live on floor number x.
Considering total number of floors as 36, excluding the ground floor.
Then the lift can take her 36-x floors up or x floors down. ( if you are on the 4th floor, you can go down to 3rd, 2nd , 1st, or ground floor, that is go down to 4 floors)
So up : down = 3 / 1 = (36 – x) / x
Or x=9
Or it can also be done like this:
probability of the event the lift takes her down = 1 / 4 = x / 36
=>x=9.
So the woman lives on the 9th floor.

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