This Time please answer all Question. I would have to thumbs down if you didnt :(

An air conditioner, which was originally priced at Php. 15, 600 is on sale at 30% off. How| much will you save if you buy it? b. A shopping mall is giving 20/10 discount series to customers who buy items worth Php.20,000 or more. If you purchased Php. 50,000 worth of items, how much will you pay? c. A retailer purchased a printer at a cost of Php 3,500. The operating expenses incurred were 5% based on cost. The retailer wanted a 10% profit based on cost. Determine the following: 1. Selling Price 2. Net Profit 3. Break-even price 4. New selling price if the retailer sold the printer at a 10% markdown 5. Total net profit or loss based on the selling price in item (d)