Task: Question Answering
Input (English): Problem: factory x ' s bulbs work for over 5000 hours in 37 % of cases , whereas factory y ' s bulbs work for over 5000 hours in 75 % of cases . it is known that factory x supplies 40 % of the total bulbs available . what is the chance that a purchased bulb will work for longer than 5000 hours ? 
Options: a ) 56.4 % , b ) 58 % , c ) 57.4 % , d ) 55 % , e ) 59.8 %
Output (English): e