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LoyalWater
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TREES 29 Jan 2009, 03:10
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Oak trees line both sides of a street for a lenght of 3/8 of a kilometer. If there is 16 meters of space between the trees, and each tree is 1 meter wide, how many trees are there along the street? (1 kilometer = 1000 meters)

36
40
42
44
46



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scthakur
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TREES 29 Jan 2009, 03:20
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Total distance between first two trees (on any side) = 18m.
Subsequent trees will be at a distance of 17m.

If there are a total of n trees beyond the first two trees then
18 + 17n = (3/8)*1000 = 375
or, n = 21

Hence, there are 21 + 2 = 23 trees on one side of the road and 46 trees on both sides of the road.
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LoyalWater
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TREES 29 Jan 2009, 03:54
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ok thank you
:)
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Economist
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TREES 01 Feb 2009, 06:45
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Answer is 46. But why should we complicate the calculation by considering First two trees and then calculating for the rest?

Let n = number of trees
n-1 = number of Gaps between n trees

So,
n (1) + (n-1) 16 = 3/8 (1000).
=> n = 23
Ans is 23*2= 46.



scthakur
Total distance between first two trees (on any side) = 18m.
Subsequent trees will be at a distance of 17m.

If there are a total of n trees beyond the first two trees then
18 + 17n = (3/8)*1000 = 375
or, n = 21

Hence, there are 21 + 2 = 23 trees on one side of the road and 46 trees on both sides of the road.
Show more



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!