Task: Question Answering
Input (English): Problem: jamshid can paint a fence in 50 percent less time than taimour can when each works alone . when they work together , they can paint the fence in 5 hours . how long would it take taimour to paint the fence alone ? 
Options: a ) 6 hours , b ) 8 hours , c ) 15 hours , d ) 24 hours , e ) 32 hours
Output (English): c