I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person). Still, I like to think I have a solid grip on basic math: I can usually gauge whether a ...

Get your timer out and see whether you can remember the golden rule from grade school math class.

Vivian Tu, whose online persona is YourRichBFF, is somewhat of a financial genius and the Chief of Financial Empowerment at SoFi at the young age of 32. Her simple math problem can have you maximizing ...