Question
3 rows of 20 boys each were told to arrange themselves to form a hollow square with the same number of boys along each side of the square. How many boys were there each side of the square?
2 m

Click button first when a symbol is required. X

3 rows of 20 boys each were told to arrange themselves to form a hollow square with the same number of boys along each side of the square. How many boys were there each side of the square?