If 9 meters of ribbon are needed to wrap each present, and you have a total of 36 meters of ribbon, you can calculate the number of presents that can be wrapped as follows:
Number of presents = Total length of ribbons ÷ Length of ribbon per present
Number of presents = 36 meters ÷ 9 meters/present
Number of presents = 4 presents
Therefore, you can wrap 4 presents with 36 meters of ribbon.