In a 2000 m race, A beats B by 100 meters or 40 seconds. Find the speed of B?
Choose the correct choice from the following answers
A) 10m/s B) 2.5m/s C) 5m/s D) 7m/s E) 3m/s
Since A beats B by 100 m or 40 seconds,   it implies that B covers 100 m in 40 seconds.   Hence speed of B = 100/40= 
<gadget id="calculator">100/40</gadget>
<output>5/2 = around 2.5</output>
2.5 m/s.   Answer: 2.5m/s
<result>B</result>
In a 2000 m race, A beats B by 100 meters or 40 seconds. Find the speed of B?