On average The number of trains after a long time is = 2 trains
<u>Given data :</u>
Number of trains = 3
<u>Let's assume :</u>
speed of Train 1 = V₁
speed of Train 2 = V₂
speed of Train 3 = V₃
<h3> </h3><h3> Determine the number of trains after a long time has elapsed </h3>
- Before linkage = 3 trains
- When ( Train 1 and Train 2 links ) = 2 trains
- When ( Train 1 , Train 2 and Train 3 links ) = 1 train
- When ( Train 2 and Train 3 links ) = 2 trains
Therefore the average number of trains after a long time will be
( 3 + 2 + 1 + 2 ) / 4
= 8 / 4
= 2 trains
Hence we can conclude that On average The number of trains after a long time is = 2 trains
Learn more about Average calculations : brainly.com/question/20118982
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For number 15 it is 66,000