A model tower uses scale 1:300. The real tower is 18 metres high. How high is the model? Enter the number of centimetres.
Correct answer
6
Explanation
Eighteen metres is 1,800 centimetres, and 1,800 divided by 300 gives a model height of 6 centimetres. Dividing 18 directly by 300 would give 0.06 and would wrongly treat a value in metres as though it were already in centimetres.