Mastering Ratios & Proportion for Aptitude Tests!
Ratio and proportion is another building block for aptitude preparation. Here's a quick guide to sharpen your skills: 1️⃣ What is a Ratio? It's a way to compare quantities. E.g., if you have 2 apples and 3 oranges, the ratio is 2:3. 2️⃣ Scaling Ratios: Multiplying or dividing both terms by the same number keeps the ratio the same. E.g., if salaries in a 3:5 ratio get a 20% hike, the ratio remains 3:5. 3️⃣ Proportions: Two ratios are in proportion if they are equal. If a/b = c/d, then a × d = b × c. This is useful for solving word problems involving relationships between quantities. 4️⃣ Smart Problem-Solving with LCM: When comparing multiple ratios (e.g., a= 3:5 and b= 7:9), use the LCM to align terms for easier comparison. This simplifies complex problems into manageable steps! 5️⃣ Componendo and Dividendo: This is a powerful rule for ratio-based word problems: If a/b = c/d, then (a + b)/(a - b) = (c + d)/(c - d). Mastery of this can save time on tricky questions! 🔑 Quick...