Oh, dude, let me grab my calculator... just kidding. So, from 3pm to 4pm, that's one hour. Then from 4pm to 7pm, that's three hours. And finally, from 7pm to 7:30pm, that's half an hour. Add them up, and you get 4.5 hours, which is like 270 minutes. Easy peasy!
From 3pm to 4pm is 60 minutes, from 4pm to 5pm is another 60 minutes, and so on. This means there are 4 hours (3pm to 7pm) x 60 minutes = 240 minutes. Then, from 7pm to 7.30pm is an additional 30 minutes. Therefore, from 3pm to 7.30pm is a total of 240 minutes + 30 minutes = 270 minutes.
Well, honey, let's do some basic math here. From 3pm to 4pm is 60 minutes, then from 4pm to 5pm is another 60 minutes, and so on. That's a total of 4 hours, which is 240 minutes. So, from 3pm to 7.30pm, we're looking at 4 hours and 30 minutes. Hope that clears things up for ya!