Task: Question Answering
Input (English): Problem: it takes printer a 4 more minutes more than printer b to print 40 pages . working together , the two printers can print 50 pages in 6 minutes . how long will it take printer a to print 140 pages ? 
Options: a ) 12 , b ) 18 , c ) 20 , d ) 42 , e ) 30
Output (English): d