Teach & case

Help a near-peer reason through a money idea — when you explain it, you understand it best — then read the real decision it comes from.

A real case · you decide

Priya's $50 question

Priya — a 16-year-old with a part-time job and her first $50 a month to spare

The idea in play: compound interest — interest earns interest, so it grows faster than it looks.

Priya just got her first steady paycheck — about $50 a month to spare. Her cousin says, "You're 16, there's no point saving yet — start when you actually earn real money." She isn't sure he's right.

She opens a compound-interest calculator. At a 7% average annual return, $50 a month feels tiny — barely one video game.

But the total at the bottom keeps climbing in a way that isn't just adding up her deposits. The interest starts earning its own interest — the part her cousin's advice quietly ignores.

Her cousin says waiting a few years won't matter much. Is that right?

She only has $50 now. Wait until she can invest "a real amount"?

Priya sets up the $50. She isn't rich — she's early, and with compound interest, early is the advantage. That's Priya's whole thing: interest earning interest, quietly, for decades.

Run your own numbers in the Decision Lab →