A can run 3 km distance in 2 min , while B can run this distance in 2 min 30 sec. By how much distance can A beat B?  Select: A) 900 m B) 600 m C) 120 m D) 180 m E) 190 m
A takes time 2 minutes=120sec   600 m takes time 2.30 minutes=150sec   diffrence= 150-120= 
<gadget id="calculator">150-120</gadget>
<output>30</output>
30sec   now we are to find distance covered in 30 sec by 600 m   150sec=3000m   1sec=20 m   30sec=20x30=600m   ANSWER:600 m
<result>B</result>
A can run 3 km distance in 2 min , while B can run this distance in 2 min 30 sec. By how much distance can A beat B?