Task: Question Answering
Input (English): Problem: sam and nik start from a and b respectively at the same time and travel towards each other at constant speeds along the same route. sam meets nik at point c on the road which is 600 m away from starting point a and 400 m away from point b. the speed of sam is 50 m / m ( meter / minute.. how much time did sam take to cover the distance between a and b ?
Options: a. 10 minutes, b. 15 minutes, c. 20 minutes, d. 22 minutes, e. 17 minutes
Output (English): c