Respuesta :

The number of non box cars is the number of cars minus the number of boxcars.
This is 57 cars - 23 boxcars = 34 non boxcars

The fraction is the number of nonboxcars divided by the total cars
or
34/57

Answer:

total no of cars =57

Cars which are not boxcars =57-23=34

23/34×57=1339/34