datatype time is good to sum elapsed time ?

I am in doubt about use decimal or time datatype. I will follow up the elapsed time that an employee will take to finish a ticket and after that I will sum the hours of all tickets. Should I use the datatype time ?
Hi Luciano,

I'd say that the time data type has enough precision for that calculus. It is easier to handle than storing it as a decimal.

Thanks André, I will use it.