Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 40)
A model car has a scale of 1:18. If the real car is 3.6 meters long, how long is the model in centimeters?
0.2 cm
2 cm
20 cm
200 cm
คำอธิบาย
3.6 * 100 cm = 360cm, 360/18=20cm