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Question 100

A blueprint uses scale 1:50. A wall measures 18 centimetres on the blueprint. How long is the real wall?

  1. 9 metresCorrect answer
  2. 0.9 metres
  3. 90 metres
  4. 25 metres

Explanation

The real length is 18 times 50, or 900 centimetres, and 900 centimetres is 9 metres. The 90-metre choice results from moving the unit conversion one decimal place too far.

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Question 100: A blueprint uses scale 1:50. A wall measures 18 centimetres… · Ratios and Proportions · Questena