1. Apple Inc. sells three types of products: iPhones, MacBooks, and iPads. The selling price and variable cost per unit for each product are as follows:

Product	Selling Price per Unit ($)	Variable Cost per Unit ($)
iPhone	$800	$500
MacBook	$1200	$800
iPad	$500	$300

1. If the sales mix is 40% iPhones, 30% MacBooks, and 30% iPads, calculate the weighted average selling price and contribution margin per unit.