Problem-Solving and Data AnalysisMediumLength of a scale model
Problem-Solving and Data Analysis practice question
A model railway is built at a scale of 1 : 87. A real railway carriage is 26.1 metres long. How long is the model of the carriage, in centimetres?
Answer: 30
26.1 m ÷ 87 = 0.3 m = 30 cm.
Common wrong answers
- If you answered 3
- 3 slips a decimal place.
- If you answered 300
- 300 slips a decimal place the other way.
- If you answered 0.3
- 0.3 is the length in metres, not centimetres.
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