Question 1205398
<br>
The question is not well written....<br>
Since the distances are always the same, increasing the speed will decrease the time required.  If the speed is increased by the ratio m:n, then the time required is DECREASED by the ratio m:n.<br>
The question as written is "In what ratio is the time changed?".  With that wording, the answer could be either m:n or n:m.<br>