summing time excel spreadsheet not working

Question

I have a issue with excel, I am trying to add up time so they can be displayed correctly in the spreadsheet that I am making, I have requests from user and give them how long it will take to change or fix. on the sheet I am displaying 01:00:00 which means the time taken is 1 hour, and displaying the sum usinfg =sum(A1:A10) which adds up fine when the time is under 24 hours, but if the sum is grater is show up as 03:00:00, i would like to know if it is possible to show time as 27:00:00 which means 27 hours the change will take. not three how would i allow this to be displayed

Answer 1

你需要使用以下自定义单元格格式：[hh]：mm：ss