Why does watching a video at 1.25 speed decrease the time by 20%? And 1.5 speed decreases it by 33%?

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I guess this reveals how fucking dumb I am. I can’t get the math to make sense in my head. If you watch at 1.25 speed, logically (or illogically I guess) I assume that this makes the video 1/4 shorter, but that isn’t correct.

In short, could someone reexplain how fractions and decimals work? Lol

Edit: thank you all, I understand now. You helped me reorient my thinking.

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Anonymous 0 Comments

Think of it in terms of the new speed and not the old speed. How much slower is 100% than 150%? 100% is 2/3rds of 150%, which means that in the time it takes to watch a video at 150%, you would’ve finished 2/3rds of the video on normal speed. Therefore your time taken decreases by 33%

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