Respuesta :

From the diagram

Ratio of model A car to model B car = 4:6

Ratio of model A to model B = 4:6

Ratio of model B to model A = 6:4

Ratio of model A to total = 4:10

Ratio of model B to total = 6:10

If 40 model A cars sold

I know that 60 model B cars was sold.