Question
Some planks were placed in a straight row. They were placed at an equal distance of 3 m apart. What was the distance between the 4th and the 9th planks?
4 m

Click button first when a symbol is required. X

Some planks were placed in a straight row. They were placed at an equal distance of 3 m apart. What was the distance between the 4th and the 9th planks?