QS) A model of a bus has a scale of 4cm to 3m. The model is 10cm long. What is the real length of the bus?
my workout: 4cm to 3m. 4 cm is length of model and 3m is real length.
so we have, mode = 10 cm long
so 4 cm to 10 cm: 10/4= 2.5 cm
for real length 3 X 2.5= 7.5 m.
I am not sure about...