javascriptOtherMedium

Financial totals slightly inaccurate

Time: 0:00

What it should do

addPrices(a, b) should add two prices in dollars and return a value correct to the cent.

What goes wrong

addPrices(0.1, 0.2) returns 0.30000000000000004 instead of 0.3.

Hints

This is a mutation and copying bugs bug

Assignment does not copy, a shallow copy still shares its contents, and mutating methods return None.