In a garden, there are 10 rows and 12 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. The length of the garden is
A. 20 m
B. 22 m
C. 24 m
D. 26 m
Answer: Option C
Solution(By Examveda Team)
Each row contains 12 plants.There are 11 gapes between the two corner trees (11 x 2) metres and 1 metre on each side is left.
Therefore Length = (22 + 2) m = 24 m.
This Question Belongs to Competitive Reasoning >> Arithmetic Reasoning
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Prosenjit, because they are asking length which is longer side
Why not 20? Because row 10, means 9 gap, 9×2=18and both sides 1+1=2 , so 18+2=20