Problem-Solving and Data AnalysisHardMap distance from a ratio scale
Problem-Solving and Data Analysis practice question
A map has a scale of 1 : 50,000, meaning 1 centimetre on the map represents 50,000 centimetres on the ground. Two villages are 3 kilometres apart. How many centimetres apart are they on the map?
Answer: 6
3 km = 300,000 cm. Divide by 50,000: 6 cm.
Common wrong answers
- If you answered 60
- 60 uses 3,000,000, converting kilometres to centimetres with one zero too many.
- If you answered 0.06
- 0.06 uses 3,000 (metres) instead of 300,000 (centimetres).
- If you answered 16.7
- 16.7 divides 50,000 by 3,000, inverting the scale.
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