Maths starts at 10.25 and lasts for 45 minutes At what time does Maths finish?

11:10.

To solve, add the minutes first: 25+45 = 70, but remember that there are 60 minutes in an hour, so 70 mins = 1 hr 10 mins. Thus the minutes are 10 and the hours are 1 later (than 10 = 11).