A map uses scale 1:40,000. A real trail is 6 kilometres long. How long is the trail on the map? Enter the number of centimetres.
Correct answer
15
Explanation
Six kilometres equals 600,000 centimetres, and 600,000 divided by 40,000 is 15 centimetres on the map. Dividing 6 directly by 40,000 before matching units would produce a tiny value with the wrong interpretation.