Mercury travels around the Sun at an approximate speed of 28.8 miles per second. This speed is how many kilometers per hour? (1 km = 0.6 miles)	Choose one
A) 172,800  B) 124,600  C) 93,400  D) 72,200  E) 60,100
The speed is 28.8 miles/s. Then 28.8/0.6= 
<gadget id="calculator">28.8/0.6</gadget>
<output>48</output>
48 km/s   48*3600= 172,800 kph   The answer is 172,800.
<result>A</result>
Mercury travels around the Sun at an approximate speed of 28.8 miles per second. This speed is how many kilometers per hour? (1 km = 0.6 miles)