An athlete runs 200 meters race in 56sec. His speed is? Choices
A) 20km/hr	B) 15km/hr	C) 12.8km/hr	D) 25km/hr	E) 40km/hr
speed = 200/56 = 25/7 m/sec   = 25/7 * 18/5 km/hr = 12.8km/hr   Answer is 12.8km/hr
<result>C</result>
An athlete runs 200 meters race in 56sec. His speed is?