Shelley compared the number of oak trees to the number of mable trees as a part of a study. She counted 9 mable trees to every 5 oak trees. Later in the year there was bug problem and many trees died. New trees were planted to make sure there was the same amount of trees as before the bug problem. The new ratio of the number of mable trees to the number of oak trees is 3:11. After planting new trees, there were 132 oak trees. How many more mable trees were in the woodlot before the bug problem than after the bug problem? explain.

Answer 1

120