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.

Warren Buffett: Why Gold is a Bad Investment
AP US history short answer example 2 | US History | Khan Academy

More Articles

View All
Westworld , Ford about God and existence. [S02E07]
[Music] To see the world, rain of sand. Heaven in a wild flower. Hold infinity in the palm of your hand and eternity in an hour. [Music] Robert: How are you alive? Bernard: Well, you’ve seen the company’s little undertaking. Do you think James Dallas wo…
If You Have These 7 Traits, You’re in Your LAST Life Cycle
Narrator: Have you ever felt out of place, like you’re here but not of here? You laugh, you love, you play the part, but deep down something feels off. You watch the world rush by—careers, relationships, the endless chase—but it all feels hollow, like a g…
Helicopter Physics Series - #2 Chopper Control - Smarter Every Day 46
Alright. This is totally easy once you understand the physics. Watch this. Left, yep right, go back to the right. It’s easy! [unintelligible] flip. 1..2..3.. Yeah! Awesome! So, as a kid I spent many an hour in a book about the drawings of Leonardo Da Vin…
Stem cells and differentiation | From cells to organisms | High school biology | Khan Academy
To me, one of the most fascinating ideas in biology is that we all started as a fertilized egg. So, that is a cell right over there. And then, through many, many divisions, all of a sudden—I wouldn’t say all of a sudden; it takes many months to develop ev…
The Seventh Amendment | US government and civics | Khan Academy
Hi, this is Kim from Khan Academy. Today, we’re learning more about the Seventh Amendment to the U.S. Constitution. The Seventh Amendment guarantees the right to juries in civil cases when the value in controversy is greater than twenty dollars. To learn…
Specific heat capacity | Khan Academy
Pop Quiz! We have two pots of water at the same temperature, say room temperature of about 30° C, as we want to increase this temperature to, say, 40° C. The question is, which of the two will take more heat energy? What do you think? Well, from our dail…