Calculating intervals and distance between equidistant plants
Question
On one side of a 1.01 km long road, 101 plants are planted at equal distance from each other. What is the total distance between 5 consecutive plants?
Options
40 m
40.4 m
50 m
50.5 m
Explanation
Convert the total road length into meters: 1.01 km = 1010 m.
If there are 101 plants planted from the very beginning to the very end of the road, they create exactly ⟨MATH⟩101 - 1 = 100⟨/MATH⟩ equal intervals (gaps) between them. Length of one gap = 1010 m / 100 = 10.1 m.
The distance between 5 consecutive plants spans exactly ⟨MATH⟩5 - 1 = 4⟨/MATH⟩ gaps. Total distance = 4 × 10.1 m = 40.4 m.
Answer: (b).
Question details
Year
2022
Paper
CSAT
Question
Q26
Section
Numerical Ability
Sub-topic
Arithmetic Word Problems
Type
Factual single
Difficulty
Medium
Source hint
101 plants on a 1.01 km long road
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