A policeman noticed a criminal from a distance of 180 km. The criminal starts running and the policeman chases him. The criminal and the policeman run at the rate of 8 km and 10 km per hour respectively. What is the distance between them after 3 minutes ?	Select the correct option:	A) 100 m	B) 80 m	C) 130 m	D) 150 m	E) None of these
Explanation :   Solution: Relative speed = (10 - 8)= 
<gadget id="calculator">(10 - 8)</gadget>
<output>2</output>
2 km/hr.   Distance covered in 3 minutes= (2 * 3/60) km = 1/10 km = 100 m.   .'. Distance between the criminal and policeman = (180 - 100)= 
<gadget id="calculator">(180 - 100)</gadget>
<output>80</output>
80 m.   Answer : 80 m
<result>B</result>
A policeman noticed a criminal from a distance of 180 km. The criminal starts running and the policeman chases him. The criminal and the policeman run at the rate of 8 km and 10 km per hour respectively. What is the distance between them after 3 minutes ?