Task: Question Answering
Input (English): Problem: alice leaves her home and walks toward bob ' s house . one hour later , bob leaves his home and walks toward alice ' s house . the distance between their homes is 41 kilometers , alice ' s walking speed is 5 km / h , and bob ' s walking speed is 4 km / h . how many kilometers will alice walk before she meets bob ? 
Options: a ) 22 , b ) 25 , c ) 27 , d ) 38 , e ) 30
Output (English): b