along a road line an odd number of persons are placed at intervals of 10m. they have to be assembled around at the middle person. then they all together covering a distance of 2.4 km. then the number of persons are
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Given that they are centered around the middle person, we will have equal number of people on both sides of the middle person.
We first convert the distance to meters :
2.4 × 1000 = 2400 m
The number of spaces between the people given that the total number of people is n is :
= n - 1
The total number of spaces is equal to :
2400/10 = 240
We have 240 spaces.
n - 1 = 240
n = 240 + 1
= 241 people.
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