In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[EX Q]: Problem: a man has some hens and cows . if the number of heads be 60 and the number of feet equals 200 , then the number of hens will be :
Options: a ) 22 , b ) 25 , c ) 24 , d ) 20 , e ) 28
[EX A]: d

[EX Q]: Problem: a car travels uphill at 30 km / hr and downhill at 90 km / hr . it goes 100 km uphill and 50 km downhill . find the average speed of the car ?
Options: a ) 32 kmph , b ) 39 kmph , c ) 34 kmph , d ) 35 kmph , e ) 36 kmph
[EX A]: b

[EX Q]: Problem: 10 play kabadi , 15 play kho kho only , 5 play both gmaes . then how many in total ?
Options: a ) 25 , b ) 35 , c ) 38 , d ) 40 , e ) 45
[EX A]:
a