Respuesta :
I think the most simple way to solve this is by writing out a few general expressions;
$40 - $10 = $30
$30 - 4x = y
$10 + y = z
X = Amount of Smoothies
Y = Total Amount left
Z = Total + the $10
I think the most simple way to solve this is by writing out a few general expressions;
$40 - $10 = $30
$30 - 4x = y
$10 + y = z
X = Amount of Smoothies
Y = Total Amount left
Z = Total + the $10