Mr. Garcia's fourth grade class has 35 minutes to eat lunch every day. If their lunch begins at 11:15 a. m., at what time will their lunch end?

11:50

Let's take away the 11 hours. 15 plus 35 equals 50. So the answer is 11:50.

In this problem you can look at only the minutes. in 11:15, 11 can be considered 11 hours and 15 can be considered 15 minutes. We want to add the 35 minutes to the 15 since lunch begins at 15 minutes and ends 35 minutes after. Therefore 15 + 35 = 50 minutes. So the answer would be 11:50.

However, if lunch had started at 11:30, then we would have used 30 minutes as the start. This answer would be 30 + 35 = 65 minutes. But there is no time of 11:65. In this case since there are 60 minutes in an hour, you may subtract 60 from 65. Theb60 minutes we subtract will give us 1 hour instead and we can then add that to the 11 hours.

So

65 - 60 = 5 minutes

11 + 1 = 12 hours

Putting the 2 answers together is 12 hours and 5 minutes or 12:05