Math: Jeff bought an iPhone at 30% off its regular price of $500. How much did he pay for it?

To find out how much Jeff paid for his iPhone, multiply $500 by the remaining 70% (100%-30%) or 0.70. Conversely, you can multiply $500 by 30% or 0.30 and subtract that answer ($150) from $500. Either way, you'll find that Jeff paid $350.

Last updated 4 years ago · 2K views