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.

What Would Your Life Be Like If You Reshuffled the Order of Events? | Short Film Showcase
Ingrown Toenail Surgery- WARNING GROSS with Pain-O-Meter

More Articles

View All
Visualizing marginal utility MU and total utility TU functions
What we’re going to do is think about the graphs of marginal utility and total utility curves. And so right over here I have a table showing me the marginal utility I get from getting tennis balls. And so it says look, if I have no tennis balls and I’m no…
China's Economic Crisis Is About To Get MUCH Worse (Housing Collapse Explained)
Across the past few months, if you’ve seen a news story about China’s economy, you’ve probably seen pictures like this: pictures of social unrest, people protesting outside of banks after their bank accounts were frozen, or outside the headquarters of maj…
Arm Yourself With Specific Knowledge
You want to talk a little bit about the skills that you need: in particular, specific knowledge, accountability, leverage, and judgment. So, the first tweet in this area is: “Arm yourself with specific knowledge, accountability, and leverage.” And I’ll th…
Dividing a decimal by a whole number example
Let’s see if we can compute what 1.86 divided by 2 is. And like always, pause this video and have a go at it. I’ll give you a hint: see if you can think about 1.86 as a certain number of hundredths, and then divide that by 2. All right, now let’s work th…
Over 100,000 Sea Turtles Nest at the Same Time. How? | National Geographic
My main interest is understanding how, or specifically what the mechanism is for these sea turtles to synchronize their nesting behaviors. We do not know why the sea turtles specifically come to Austin. Sea turtles are renowned for their ability to trave…
LearnStorm 2021 - Khan Academy LearnStorm
Hello teachers, I’m Sal Khan, founder of the not-for-profit Khan Academy, and I’m here to announce a nationwide back-to-school learning challenge called LearnStorm. LearnStorm is an exciting way to jumpstart your school year around learning activities. …