TASK DEFINITION: In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
PROBLEM: Problem: a train 100 m long can cross an electric pole in 20 sec and then find the speed of the train ? 
Options: a ) 19 kmph , b ) 18 kmph , c ) 72 kmph , d ) 17 kmph , e ) 91 kmph

SOLUTION: b

PROBLEM: Problem: a train running at the speed of 60 km / hr crosses a pole in 6 sec . what is the length of the train ? 
Options: a ) 356 , b ) 278 , c ) 127 , d ) 100 , e ) 150

SOLUTION: d

PROBLEM: Problem: if the population of a certain country increases at the rate of one person every 45 seconds , by how many persons does the population increase in 1 hour ? 
Options: a ) 80 , b ) 120 , c ) 150 , d ) 180 , e ) 160

SOLUTION:
a