Latest TCS Aptitude Question SOLUTION: Two vertical pole of 2 m and 8 m stand apart on a horizontal plane.The height in meters at the point of intersection of the line joining the top of each pole to the bottom of othe

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Two vertical pole of 2 m and 8 m stand apart on a horizontal plane.The height in meters at the point of intersection of the line joining the top of each pole to the bottom of other pole is ....
a.1.8
b.1.6
c.5.6
d. cannot be determined without knowing the distance bw the bottom of the pole

Asked In TCS Loknath Sarkar (9 years ago)

Solved Swapnil Dubey Read Solution (8)

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Read Solution (8) :

Swapnil Dubey  (9 years ago) Best Solution

in this question drawing the diagram correctly and precisely will get u to the answer easily.

make 2 poles AB and at some distance from the foot of AB make CD name them AB=2m. and CD =8m

then, the next step will be,,

joining the foot of both the towers.

now join AD and BC,and name the point of intersection of these lines as E .

now draw a perpendicular from E to line BD.and name that point F and say EF=x

now F divides both BD in two parts let it be P and Q ,,i.e BF =p and FD = Q.

now observe triangle ABD& EFD,they are similar hence x/Q=2/P+Q

x= 2Q/P+Q......(1)

now observe triangle CBD and EBF,they are also similar hence x/P=8/P+Q

x=8P/P+Q......(2)

now equate (1) and (2)
we will get Q=4P now put Q=4p in equation (1)
i.e x/4P=2/5p
x= 8P/5P
x=1.6

hence drawing diagram makes ur approach quite easier!!

Is this solution Helpfull? Yes (75) | No (2)  

kushal sarker  (9 years ago)

formula is...(p*q)/p+q
here p=2,q=8
height in meters=(8*2)/8+2=16/10=1.6(option b is correct)

Is this solution Helpfull? Yes (13) | No (2)  

Ritesh Kumar  (9 years ago)

1.6
am i right

Is this solution Helpfull? Yes (3) | No (1)  

kaushik ghosh  (9 years ago)

1.6m
draw diag and use property of similar triangles....

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

Pratik Kumar Layek  (9 years ago)

Thanks Swapnil...
Very nice answer....

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Loknath Sarkar  (9 years ago)

SWAPNIL DUBEY..thank you very much...awsome

Is this solution Helpfull? Yes (1) | No   

Loknath Sarkar  (9 years ago)

I dont knw the ans...thats y i am asking. but the asn is not d....cause i answered d...and it was wrong

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ankit vyas  (9 years ago)

4
base is required for solve

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