9. How many years are in \( \frac{2}{5} \) decade?
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A decade is equal to 10 years, so to find out how many years are in \( \frac{2}{5} \) of a decade, you simply multiply: \( \frac{2}{5} \times 10 = 4 \) years. So, \( \frac{2}{5} \) of a decade is 4 years. Now you know that a little fraction of time can add up to some significant moments, right? Four years might not seem too long, but think about all the things that can happen in that time – from graduating school to embarking on new adventures! It’s amazing how quickly time flies in our busy lives! If you're curious about decades in general, they're a perfect way to measure cultural shifts in music, fashion, and even technology! Each decade has its own trends and vibes, so if you look back at a specific decade, you can see how it shaped the world we're living in today!