Answer:
Explanation:
Dominic put his cars in 6 rows with 5 cars in each row, for a total of 30 cars.
His sister put the cars in three rows and each row has the same number of cars.
To have 30 cars in 3 rows, divide 30 by 3 to get 10 cars in each row.
3 rows x 10 cars = 30 cars