The task is to generate the correct answer for a given math problem.

[Q]: Problem: if a 1 mm thick paper is folded so that the area is halved at every fold , then what would be the thickness of the pile after 50 folds ?
[A]: 1 billion km', 'e ) none'


[Q]: Problem: the profits of qrs company rose 30 % from march to april , then dropped 20 % from april to may , then rose 50 % from may to june . what was the percent increase for the whole quarter , from march to june ?
[A]: 56 %


[Q]: Problem: the speed of a car is 95 km in the first hour and 60 km in the second hour . what is the average speed of the car ?
[A]:
77.5 kmph