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'.

[Q]: Problem: a train 250 m long running at 72 kmph crosses a platform in 15 sec . what is the length of the platform ?
Options: a ) 50 m , b ) 200 m , c ) 250 m , d ) 270 m , e ) 300 m
[A]: a

[Q]: Problem: an engineer undertakes a project to build a road 10 km long in 150 days and employs 30 men for the purpose . after 50 days , he finds only 2 km of the road has been completed . find the ( approximate ) number of extra men he must employ to finish the work in time .
Options: a ) 22 , b ) 30 , c ) 15 , d ) 18 , e ) 20
[A]: b

[Q]: Problem: the speed of a car is 65 km in the first hour and 45 km in the second hour . what is the average speed of the car ?
Options: a ) 72 kmph , b ) 55 kmph , c ) 50 kmph , d ) 80 kmph , e ) 82 kmph
[A]:
b