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 1 of 2.
Bhati said:
1 decade ago
When its clearly written in question that he used 27 fence poles on each side, then it doesn't matters that each corner is common for 2 sides. He can still use 27 poles for each side, as stated in question.
Roop said:
1 decade ago
Number of poles between two corners = 25.
So 25*4 = 100(4 sides).
100+4 = 104(4 corner poles).
So 25*4 = 100(4 sides).
100+4 = 104(4 corner poles).
Kurp said:
9 years ago
@Roop.
Why would it be 25 if it clearly states 27?
Why would it be 25 if it clearly states 27?
Kurp said:
9 years ago
I don't understand why 4 was subtracted at all. Please anyone explain it.
Pranshu yadav said:
9 years ago
We have a square plot in each side there are 27 poles. So, 4 poles are common in each side :
(27 * 4)-4 =108-4 = 104 poles.
Therefore 104 poles are together used.
(27 * 4)-4 =108-4 = 104 poles.
Therefore 104 poles are together used.
Annie said:
8 years ago
Why 4 is subtracted? Please explain it.
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.
Soya said:
7 years ago
27 pole in each side means, the poles in the corner is common for two sides. Thus we subtracted the poles in the corner, i.e, 4 poles.
(1)
Muskan said:
6 years ago
Why is 4 subtracted? Explain it?
(1)
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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