Power up vs. 50/50

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9y

So I need some help...

I've been posting with the 50% method for the last few days. It wasn't until a few minutes ago that I realized you could also use the "Power Up" method.

Can someone help explain the difference between these two?

Been using Steemit for 3 days now and I absolutely love it. I want to learn the most about it as I possibly can.

Thanks