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The number of pear trees to the number of apples trees in an orchard is 11 : 14.
The number of pear trees is 336 less than the number of apple trees.
The number of trees bearing red apples to the number of trees bearing green apples is in the ratio 7 : 9.
The number of trees bearing green pears to the number of trees bearing red pears is the the ratio 15 : 13.
How many less green pear trees as compared to red apple trees are there in the orchard?