Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 10)
A model of a building has a scale of 1:50. If the height of the model is 10 cm, what is the actual height of the building in meters?
0.2 m
5 m
2 m
50 m
Vysvětlení
1:50, 10cm model = 10 * 50cm, or 500cm, or 5m