A boy runs 200 metres in 24 seconds. What is his speed ?
Choose the correct answer.
A) 20 km/hr B) 24 km/hr C) 28.5 km/hr D) 30 km/hr E) 35 km/hr
200/24 * 18/5= 
<gadget id="calculator">200/24 * 18/5</gadget>
<output>30</output>
30 km/hr   Answer: 30 km/hr
<result>D</result>
A boy runs 200 metres in 24 seconds. What is his speed ?