Answer:Let's break down these business problems step-by-step.PROBLEM 1: Food Business for Medical AssistanceGiven:Cost of each meal = ₱501. If you and your friend wanted to put a 20% mark-up based on the cost, how much is your mark-up? Show your solution.Concept: Mark-up based on cost is calculated by multiplying the cost by the mark-up rate.Formula: Mark-up Amount = Cost × Mark-up RateSolution:Mark-up Amount = ₱50 × 20%Mark-up Amount = ₱50 × 0.20Mark-up Amount = ₱10Answer: Your mark-up would be ₱10.2. How much would be the selling price of each meal? Show your solution.Concept: The selling price is the sum of the cost and the mark-up amount.Formula: Selling Price = Cost + Mark-up AmountSolution:Selling Price = ₱50 + ₱10Selling Price = ₱60Answer: The selling price of each meal would be ₱60.3. During weekends, you put a 5% markdown based on the selling price on each meal to increase the demand of your product. How much is each meal during weekend? Show your solution.Concept: Markdown is a reduction from the selling price. The new price is the selling price minus the markdown amount.Formulas:Markdown Amount = Selling Price × Markdown RateWeekend Price = Selling Price - Markdown AmountSolution:Markdown Amount = ₱60 × 5%Markdown Amount = ₱60 × 0.05Markdown Amount = ₱3Weekend Price = ₱60 - ₱3Weekend Price = ₱57Answer: Each meal would be ₱57 during the weekend.4. If you want to price each meal at ₱85, at what rate is the mark-up based on cost? Show your solution.Concept: The mark-up rate based on cost is the mark-up amount divided by the cost, expressed as a percentage. First, find the mark-up amount.Formulas:Mark-up Amount = Selling Price - CostMark-up Rate (based on Cost) = (Mark-up Amount / Cost) × 100%Solution:Mark-up Amount = ₱85 - ₱50Mark-up Amount = ₱35Mark-up Rate = (₱35 / ₱50) × 100%Mark-up Rate = 0.70 × 100%Mark-up Rate = 70%Answer: The mark-up rate based on cost would be 70%.PROBLEM 2: Clothing Line CompanyGiven:Cost of cotton = ₱85 per meterOperating Expenses = 20% of the CostDesired Profit = 30% of the Cost1. How much mark-up should the company put on the cotton? Show your solution.Concept: The total mark-up includes both the operating expenses and the desired profit, both calculated based on the cost.Formulas:Operating Expenses Amount = Cost × Operating Expenses RateProfit Amount = Cost × Profit RateTotal Mark-up = Operating Expenses Amount + Profit AmountSolution:Operating Expenses Amount = ₱85 × 20%Operating Expenses Amount = ₱85 × 0.20Operating Expenses Amount = ₱17Profit Amount = ₱85 × 30%Profit Amount = ₱85 × 0.30Profit Amount = ₱25.50Total Mark-up = ₱17 + ₱25.50Total Mark-up = ₱42.50Answer: The company should put a ₱42.50 mark-up on the cotton.2. How much will be the selling price of the cotton? Show your solution.Concept: The selling price is the sum of the cost and the total mark-up.Formula: Selling Price = Cost + Total Mark-upSolution:Selling Price = ₱85 + ₱42.50Selling Price = ₱127.50Answer: The selling price of the cotton will be ₱127.50 per meter.3. What is the mark-up rate based on the cost? Show your solution.Concept: The mark-up rate based on cost is the total mark-up amount divided by the cost, expressed as a percentage.Formula: Mark-up Rate (based on Cost) = (Total Mark-up / Cost) × 100%Solution:Mark-up Rate = (₱42.50 / ₱85) × 100%Mark-up Rate = 0.50 × 100%Mark-up Rate = 50%Answer: The mark-up rate based on the cost is 50%.Step-by-step explanation: