yego.me
yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Length of a trip in 24 hour time | Math | Khan Academy

2m read
·Nov 10, 2024

Hello! So we're told Colette rides her bike home from school every afternoon. She leaves school at 14:55 and arrives home at 15:25. How long does she ride her bike? So pause this video like always and see if you can answer that question: how long is her bike ride home?

All right, now to help us answer that question, I'm going to set up a timeline. So that's my timeline there, and let's say that everything is going on between 14 hours and it looks like between, actually, past 15 hours. So I'll go to 16 hours. So that is hours, and this is 15 hours, and then 16 hours would be maybe right over there 16 hours.

And this would be 14 and a half, just to make things a little bit clearer. This would be 15 and a half, just like that. Actually, it'd be a little bit— it would be something like that. And so let's see, she leaves school at 14:55. Where is that on this timeline? Well, 14:55 is 5 minutes before 15.

So it's going to be roughly right over here, so that is when Colette leaves. So that is 14:55, and then when she arrives, 15:25, that's 25 minutes after 15 hours, so that is right over there. So this right over there is when she arrives home, 15:25.

And so how long is that? Well, the way I think about it is if we go from 14:55 to 15:00, that is 5 minutes. So this part right over there is five, and then to go from 15:00 to 15:25, that's another 25 minutes.

So the total length of her trip in time is going to be 5 minutes plus 25 minutes. 5 plus 25 is 30. 30 minutes, and we are done.

Fishing Tips: How to Rig a Breakway | Wicked Tuna: Outer Banks
This is How The World Ends

More Articles

View All
Warren Buffett: 9 Mistakes Every Investor Makes
Warren Buffett is without a doubt the most well-known and highly respected investor on the planet. He bought his first stock at just 11 years old, and now at 91 years old, that means he has been investing for 80 years. During that time, Buffett has made h…
How Art Alters Our Reality
The idea that a film, radio program, or TV episode can influence a generation of people seems like a scary thought. Yet, time and time again, we’ve seen that events in a fictional world can have consequences in our real world, some far more sinister than …
Journeying With Bats Across Mexico | Perpetual Planet: Mexico
I just learned how to hold a bat correctly. This is what they do to learn more about the different species that live in this region. They’re nervous. We’re told to not hold them for very long. It’s easy to forget that the nocturnal world is teeming with w…
Elliot Choy asks Ray Dalio about his early goals
Was was that first step for you? Do you recall kind of some of your early goals? Was it simply to find some level of success, some level of security? Do you remember what those first steps were for you? Well, it was, um, it was more a passion, you know? …
Change in angular velocity when velocity doubles
We’re told that a car with wheel radius r moves at a linear velocity v, and this is a bolded v to show that it’s a vector. Suddenly, the car accelerates to velocity 2v. How does the angular velocity of the wheels change? So pause this video and see if you…
Homeroom with Sal & David C. Banks - Thursday, September 10
Hi everyone, welcome to our homeroom live stream. Sal here from Khan Academy. Really excited about the conversation we’re about to have with David Banks, who is really one of the leading educators in the country, president of the Eagle Academy Foundation.…