How to add two time in coldfusion

I am trying to find end time with duration and start time using ColdFusion.
What I have tried is :

<cfset st_time=timeFormat("05:00:00",'hh:mm:ss tt')>
 <cfset s_d=listToArray(duration,":")>
  <cfset hours=s_d[1]>
  <cfset min=s_d[2]>
  <cfset sec=s_d[3]>
   <cfset new_time = TimeFormat(createTime(hours, min, sec))>

Expected Output

start_time="05:00:00 PM"
duration="02:30:00"
then end_time should be 07:30:00 PM 

how to calculate end time like this?

>Solution :

Step 1 – Covert your duration to seconds.

Step 2 – Use ColdFusion’s DateAdd function to calculate the end time.