One train is traveling 72 kmph and other is at 10 meters a second. Ratio of the speed of the two trains is?
Pick one.
A) 5:4	B) 5:6	C) 2:1	D) 5:4	E) 5:1
72 * 5/18 = 10   20:10 =&gt; 2:1   Answer: 2:1
<result>C</result>
One train is traveling 72 kmph and other is at 10 meters a second. Ratio of the speed of the two trains is?