Mathematics for IGCSE & O level - Ratio And Proportion (Section 3 - No. 9)
If the scale on a map is 1cm : 2km, and the distance between two points on the map is 3.5cm, what is the actual distance between the two points?
1.75 km
3.5 km
7 km
10.5 km
Explanation
If 1 cm represents 2 km, then 3.5 cm represents 3.5 * 2 km = 7 km.
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