Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 27)
On a map, the distance between two cities is 6 cm. The actual distance is 30 km. What is the scale?
1cm:5km
1cm:6km
1cm:15km
1cm:30km
Explanation
6cm = 30km, then 1cm = 5km
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