Q:

A and B are 2 cities 60 Km. apart. Two men P and Q start together to walk from A to B. Speed of P is 4 Km / hr. less than that of Q. Q reaches the city B and return back . He meets P at 12 Km away from city B. What is the speed of P? 

• 1
  8 Km/hr
• 2
  12 Km/hr
• 3
  16 Km/hr
• 4
  20 Km/hr