Verbal Reasoning - Arithmetic Reasoning - Discussion
Discussion Forum : Arithmetic Reasoning - Section 1 (Q.No. 29)
29.
A farmer built a fence around his square plot. He used 27 fence poles on each side of the square. How many poles did he need altogether ?
Answer: Option
Explanation:
Since each pole at the corner of the plot is common to its two sides, so we have :
Total number of poles needed = 27 x 4 - 4 = 108 - 4 = 104.
Discussion:
12 comments Page 2 of 2.
Lakshminnarasimha said:
7 years ago
Total 27 poles.
25 poles are 4 sides=25*4=100.
corner side= 2*2=4,
So, Total =104.
25 poles are 4 sides=25*4=100.
corner side= 2*2=4,
So, Total =104.
Aditya said:
6 years ago
@Prashnu @Soya.
They have mentioned that the poles are along the side of the square. They haven't mentioned that there is a pole common to adjacent sides of a square. Why can't we assume that there are 27 poles on one side of a square and no common pole on the corner, then the answer would have been 27*4=108?
That's the reason we are asking that why are the 4 poles subtracted?
They have mentioned that the poles are along the side of the square. They haven't mentioned that there is a pole common to adjacent sides of a square. Why can't we assume that there are 27 poles on one side of a square and no common pole on the corner, then the answer would have been 27*4=108?
That's the reason we are asking that why are the 4 poles subtracted?
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