Question
Download Solution PDFOn a 200 m long straight road, maximum number of poles are fixed at 20 m interval. How many of these poles should be removed in order to have maximum number of poles at an interval of 40 m on the road?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculation:
When poles are placed at 20 m interval, numbers of poles that can be placed = 200/20 + 1(Pole is also placed at 0 m)
= 11 poles.
Now, when poles are placed at 40 m interval, numbers of poles that can be placed = 200/40 + 1(Pole is also placed at 0 m)
= 6 poles.
∴ Number of poles removed = 11 - 6 = 5 poles.
The correct answer is Option 3.
Last updated on Jun 23, 2025
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