If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

# Time word problem: Susan's break

Dive into the concept of converting units of time, specifically minutes into hours. Understand the importance the relationship between these units and demonstrates how to apply this knowledge to solve real-world problems involving time intervals. Created by Sal Khan.

## Want to join the conversation?

• How much minutes in a year
(5 votes)
• You can multiplicate 365 days per 24 hours per 60 minutes and that will give you 525600 minutes.
(19 votes)
• How do we find minutes in the seconds that is given in the question, ex; How many minutes is 5100
(5 votes)
• a exapmle is that a minute is 60 sec a hour is 3600 sec. so 5100-3600 is 1500 sec. 1500 sec/60 25 85 min
(6 votes)
• Hello!
I would like to say how my life is horrible! My girlfriend just told me that she is falling out of love with me. That meaans she likes me as a crush a little now. we're gonna breakup soon. now im depressed :( Please tell me how to deal with this
(2 votes)
• What's the difference between and ?
(2 votes)
• this isn't a math section any more in the new era of brain rot
(1 vote)
• how many milliseconds are in a year
(1 vote)
• 3.154e+10, or 3.154 * (10 ^ 10)
31,540,000,000
(1 vote)
• do you have to convert all measurment
(0 votes)
• Not always, unless your answer has to be in another measurement. If it can stay in the first unit of measurement, Then you don't have too.
(1 vote)
• I don't understand why he does't just add to then he could subtract from i think that's how you could do it. ''right''
(0 votes)
• I'm still confused. Please help!
(0 votes)
• I don't know how to change profile picture
(1 vote)
• if instead of the test lasted 96 minutes what would the answer be if it was 120 minutes aka 1 hour?
(0 votes)
• Its 2 hours
(1 vote)

## Video transcript

Susan has 96 minutes to complete a test at school. The test begins at 1:59 PM. And Susan has volleyball practice at 4:00 PM. How much time will Susan have between the end of the test and the beginning of volleyball practice? Let's think about this a little bit. So the test begins at 1:59. So it's a very strange time to begin a test, but let's just go with that. So let me draw a little time line here. So let's say that this is 2 o'clock PM. Then we're going to have 3:00 PM. Then we're going to have 4 o'clock PM, which is also when volleyball practice begins. So this is volleyball practice. It's going to start then and then go on from 4:00 PM. And then the test begins at 1:59. So let me continue the number line. So this right over here is 1:00 PM. So the test is going to begin at 1:59, so 1 minute before 2 PM. We know that there are 60 minutes in an hour. So 1:59 is 1 minute before 2:00 PM. So I'm not drawing it completely it scale, but this right over here is 1:59 PM. So we use 1 minute to get to 2:00 PM. And then, let's see, we have to get up to 96 minutes. So then you get another 60 minutes to go to 3:00 PM. So, so far, we've used a cumulative 61. So this is 1 minute. So this is how long the test has been going on since the beginning. So 1 minute by 2:00 PM, 61 minutes by 3:00 PM. If we go all the way to 4:00 PM, that's going to be another 60. That'd be 121 minutes, which is longer than the actual test. So we know that the entire test is 96 minutes. So we're going to get to some point right over here, some point like this. That's 96 minutes. And what we need to figure out is, is what is left over? What is this distance right over here? Or what is this time, this difference in time right over here? And so to figure that out, we had to figure out the time at which 96 minutes have passed since the beginning of the exam. So at 3 o'clock, 61 minutes have passed. And so if we, if we say well how many more minutes have to go on for the end of the test? It's going to be 96 minus 61. So the amount of time that elapses past 3 minutes is 96 minus 61, which is 35 minutes. So this right over here is going to be 3:35. And so now our question is, how much time is there between 3:35 and 4:00 PM? Well, once again, 60 minutes in an hour. 4:00 PM is essentially the 60th minute. So if we take 60 minus 35, we get 2:25. So she has a total of 25 minutes remaining after the test before she has to get to volleyball practice. Just as a review. One minute between 1:59 and 2:00, then another 60. That gets us to 61 total minutes. Then another 35 minutes gets us to 96 minutes have passed. And that also gets us to 3:35, which means we have 25 minutes until 4:00.