This for #2 S1-6 rows is 5 cars so that mean is 30 cars in 6 rows S2- So his sister take and push in 3 rows, that mean still have 30 cars but no more 5 cars in a row. S3-30 divided 3 because total is 30 cars in 6 rows nut niw is 3 rows so 30/3=10 cars/ 1 rows I hope you understand!Good Luck!
