instruction:
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'.
question:
Problem: it takes joey the postman 1 hours to run a 7 mile long route every day . he delivers packages and then returns to the post office along the same path . if the average speed of the round trip is 8 mile / hour , what is the speed with which joey returns ?
Options: a ) 11 , b ) 12 , c ) 13 , d ) 8 , e ) 15
answer:
d

question:
Problem: if a train , travelling at a speed of 360 kmph , crosses a pole in 5 sec , then the length of train is ?
Options: a ) 381 m , b ) 112 m , c ) 500 m , d ) 125 m , e ) 433 m
answer:
c

question:
Problem: two pipes a and b can separately fill a tank in 12 and 15 minutes respectively . a third pipe c can drain off 56 liters of water per minute . if all the pipes are opened , the tank can be filled in 15 minutes . what is the capacity of the tank ?
Options: a ) 549 , b ) 540 , c ) 542 , d ) 672 , e ) 279
answer:
d