How much money is saved by purchasing a mountain bike priced $320 at 20% discount,?

[[ashley]]

rather than one marked $320 with discounts of 10% and 10%?


I don't get it.

 

[黃 芬 俐]

$320*0.20=$64
$320-$64=$256

$320*0.10=$32
$320-$32=$288*2=$576

$576-$256=$320 is saved