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Read the ruler under the map. The map scale is 1 cm : 5 km. What is the actual distance between Rampur and Sitapur?

Class 6Ratio and ProportionRatio and Proportion
  • A42.5 km
  • B7.5 km
  • C40 km
  • D37.5 km

Step-by-Step Solution

On the ruler, Rampur is at 1 cm and Sitapur at 8.5 cm, so the map distance is cm. Actual distance km. (42.5 km forgets that the ruler starts at 0, not at Rampur.)
Answer: D) 37.5 km

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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