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At a blood-donation camp 35 men and 28 women donated blood. What is the ratio of women donors to all the donors?

Class 6Ratio and ProportionRatio and Proportion
  • A4 : 5
  • B5 : 9
  • C4 : 9
  • D9 : 4

Step-by-Step Solution

Total donors = 35 + 28 = 63. Women : all donors = 28 : 63 = 4 : 9 (HCF 7). The trap is 4 : 5, which is women : men (28 : 35) — a part-to-part ratio, not the part-to-whole one asked for. 5 : 9 is men : all donors.
Answer: C) 4 : 9

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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