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72 saplings are planted along a road, neem and peepal in the ratio 4 : 5. How many peepal saplings are planted?

Class 6Ratio and ProportionRatio and Proportion
  • A32
  • B36
  • C40
  • D8

Step-by-Step Solution

Total parts = 4 + 5 = 9, so one part = 72 ÷ 9 = 8 saplings. Peepal takes 5 parts = . The value 32 is the neem share (4 parts), 8 is the size of one part, and 36 is simply half of 72 — which ignores the 4 : 5 split altogether.
Answer: C) 40

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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