1 hour after 2.20 p.m. will be 3.20 p.m. We are then left with 50 minutes to add to the 3.20 p.m. If you add 40 minutes to the 20 minutes after the 3 p.m. [ 3.20 p.m.] that will be 1 hour [ 60 minutes make an 1 hour] and at that time the time will be 4 p.m. [ 1 hour after 3.00 p.m.] and the 50 minutes will be left with 10 minutes. 10 minutes after 4.00 p.m. is 4.10 p.m. Hence the match will end at 4.10 p.m. ALTERNATIVELY To add time, add the hours separately and the minutes separately If the minutes is 60 or more, convert to hours and minutes 2.20 p.m. =2 hours and 20 minutes Adding 1 hour 50 minutes Adding Hours 2+1=3 Adding Minutes 20 minutes +50 minutes =70 minutes 60 minutes make an hour, hence 70 minutes is 1 hour 10 minutes Add the 1 hour to the previous sum of the hours Total hours =3+1=4 Minutes left is 10 minutes Hence the match ends at 4.10 p.m.