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'.

[EX Q]: Problem: what is the angle between the minute hand and the hour hand when the time is 1540 hours ? 
Options: a ) 150 , b ) 160 , c ) 140 , d ) 130 , e ) none
[EX A]: d

[EX Q]: Problem: a hall 36 m long and 15 m broad is to be paved with stones , each measuring 8 dm by 5 dm . the number of stones required is : 
Options: a ) 180 , b ) 1800 , c ) 18 , d ) 18000 , e ) 1350
[EX A]: e

[EX Q]: Problem: if 36 men can do a piece of work in 25 hours , in how many hours will 15 men do it ? 
Options: a ) 10 hours , b ) 40 hours , c ) 20 hours , d ) 60 hours , e ) none of them
[EX A]:
d