Hi! I have a couple of Marketing Metric questions that I am confused with. Even if you are able to answer a couple of questions that will be great. Thanks :)

Question 1:

Anne hand-knits baby blankets. The wool costs about $25 per blanket. She sells the blankets to a wholesaler for $45. The wholesaler sells the blankets to speciality baby shops for $60, where the blankets retail for $80. What is the percentage margin to the nearest whole number for the entire chain per blanket?

Question 2:

Future Shop is selling BlackBerry Z10 at $649.99. What is the percent markup, rounded to the nearest whole number, for Blackberry Z10, knowing that Future Shop is earning a margin of 20% on this phone?

Question 3:

An electronics firm is currently manufacturing a widget that costs $20/unit to produce and is sold at $40/unit. The firm has fixed costs of $60,000. The firm can increase the product's profitability by adding a new piece of equipment at an additional cost of $6,000. By installing the new equipment, the widget's contribution margin will increase by 25%. What is the percentage decrease in break even volume rounded to the nearest whole number, if the firm adds the new equipment?