50 trees are standing in a line such that distance between any two consecutive trees is same. A car takes 18 seconds to travel from 13th tree to 34th tree. How much time (in seconds) will it take to reach from 1st tree to 50th tree? ?->(Show Answer!)

1. 50 trees are standing in a line such that distance between any two consecutive trees is same. A car takes 18 seconds to travel from 13th tree to 34th tree. How much time (in seconds) will it take to reach from 1st tree to 50th tree?

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By: anil on 05 May 2019 02.26 am

Let the distance between each tree = $$d$$ metres Thus, distance between 1st and 50th tree = $$49d$$ metres Distance covered by car from 13th to 34th tree = $$21d$$ => Speed of car = $$x=frac{21d}{18}$$ -------------(i) $$ herefore$$ Time taken to reach from 1st tree to 50th tree = $$frac{49d}{x}$$ = $$frac{49d}{frac{21d}{18}}=49 imesfrac{18}{21}=42$$ seconds => Ans - (A)

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