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: cole drove from home to work at an average speed of 30 kmh . he then returned home at an average speed of 90 kmh . if the round trip took a total of 2 hours , how many minutes did it take cole to drive to work ? 
Options: a ) 66 , b ) 70 , c ) 72 , d ) 75 , e ) 90
[EX A]: e

[EX Q]: Problem: if the wheel is 12 cm then the number of revolutions to cover a distance of 1240 cm is ? 
Options: a ) 11 , b ) 14 , c ) 16 , d ) 12 , e ) 19
[EX A]: c

[EX Q]: Problem: a man swims downstream 70 km and upstream 30 km taking 10 hours each time ; what is the speed of the current ? 
Options: a ) 1 , b ) 4 , c ) 2 , d ) 6 , e ) 8
[EX A]:
c