Please help! I would like to be able to follow your steps to learn how to solve future problems. thank you so much :)

Margin for Product Z is: $300 $450 40% 66.67% If the probability of selling 80 units is 40%, what is the expected profit for Product C? $1,200 $640 $1,840 None of the answers provided above is the correct answer. If I put a sweater on sale for 10% off and the sale price of the sweater is $45, what was the sweater's original price? $50$49.50$55 None of the answers provided above is the correct