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A 240-page scrapbook is divided into three sections — photos, drawings and notes — in the ratio 3 : 4 : 5. How many pages does the drawings section get?

Class 6Ratio and ProportionRatio and Proportion
  • A80 pages
  • B60 pages
  • C100 pages
  • D48 pages

Step-by-Step Solution

Total parts = 3 + 4 + 5 = 12, so one part = 240 ÷ 12 = 20 pages. Drawings take 4 parts = pages. The 60 and 100 are the photos and notes sections — match the name to its own term before multiplying; 48 comes from dividing 240 by 5 instead of by 12.
Answer: A) 80 pages

Key idea: What a ratio means

The ratio 2 : 3 says: for every 2 of one thing, there are 3 of another. In a fruit basket of 2 apples and 3 oranges, the ratio of apples to oranges is 2 : 3. **Order matters** — the ratio of oranges to apples in the same basket is 3 : 2. The two quantities must be in the same unit (you can't ratio apples to kilograms unless you convert).

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