This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Here are the solutions to questions 7, 8, and 9. 7. (a) Find the total cost when p = 80 pages and c = 120 copies. Step 1: Use the given formula for the total cost C. C = 0.03pc + 50 Step 2: Substitute the given values p=80 and c=120 into the formula. C = 0.03 × 80 × 120 + 50 Step 3: Perform the multiplication and addition. C = 2.4 × 120 + 50 C = 288 + 50 C = 338 The total cost is GH¢ 338. C = GH 338 7. (b) If a shopkeeper marks an article 30% above its cost price and sells it at GH¢162.50, what is his cost price? Step 1: Let the cost price be CP. The selling price (SP) is the cost price plus a 30% mark-up. SP = CP + 0.30 × CP SP = 1.30 × CP Step 2: Substitute the given selling price SP = GH 162.50 into the equation. 162.50 =