Xiaoshengchu-How to do this math problem about how many cars pass by the toll booth?

Solution: Because the number of small cars: the number of medium-sized cars = 5: 3 = 5 \ 3: 1.

Number of medium-sized cars: number of large cars = 5: 4 = 1: 4 \ 5

So the number of small cars: the number of medium-sized cars: the number of large cars = 5 \ 3:1:4 \ 5 = 25:15:12.

Small car charge: medium car charge: large car charge = (5× 25): (10×15): (15×12)

= 125: 150: 180

=25:30:36

Small car = 3640× 25 9 1 ÷ 5 = 200 (car)

Medium-sized car = 3640× 3091÷10 =120 (vehicle)

Large vehicles = 3640× 36 9 1 ÷ 15 = 96 vehicles)

A: There are 200 small cars, 200 medium-sized cars and 96 large cars.