Mathematics for IGCSE & O level - Ratio And Proportion (Section 3 - No. 30)
The scale on a model car is 1:24. If the model car is 10 cm long, what is the length of the real car in centimeters?
0.42 cm
2.4 cm
240 cm
2400 cm
คำอธิบาย
If 1 cm represents 24 in real life, then 10cm = 24*10=240cm