A farmer is planting two types of trees: apple trees and pear trees. Each apple tree requires 4 square meters of space, and each pear tree requires 6 square meters of space. The total area available for planting is 400 square meters. The equation represents this situation, where is the number of apple trees planted and is the number of pear trees planted. What is the best interpretation of in this context?
The farmer planted a total of 400 trees.
If 55 apple trees were planted, then 30 pear trees were planted.
If 55 square meters were used for apple trees, then 30 square meters were used for pear trees.
If 30 apple trees were planted, then 55 pear trees were planted.
