Answer:
48 apple trees and 90 pears trees
Step-by-step explanation:
Number of rows of apple trees in an Orchard= 4 rows
Number of trees in each row= 12 trees
Total number of apple trees= Total number of rows × total number of trees
Total number of apple trees= 4×12
Total number of apple trees= 48 trees
Number of rows of pear trees in an Orchard= 6 rows
Number of trees in each row= 15 trees
Total number of apple trees= Total number of rows × total number of trees
Total number of apple trees= 6×15
Total number of apple trees= 90 trees
Hence, the correct answer is 48 apple trees and 90 pear trees or 138 tress