An electric wire runs for 1 km b/w some no: of poles. If one pole is removed the distance b/w each pole increases by 1 2/6 (mixed fraction). How many poles were there initially?  Pick one.
A) 4  B) 5  C) 6  D) 7  E) 8
let there be x no. of poles   distance b/w them= 1/(x-1)   now when one pole is removed   distance bw each pole=1/(x-2)   now according to the question   1/(x-2) =8/6 (1/x-1)   on solving you will get x=5   ANSWER:5
<result>B</result>
An electric wire runs for 1 km b/w some no: of poles. If one pole is removed the distance b/w each pole increases by 1 2/6 (mixed fraction). How many poles were there initially?