An apple farm yields an average of 41 bushels of apples per tree when 23 trees are planted on an acre of ground. Each time 1 more tree is planted peracre, the yield decreases by 1 bushel(bu) per tree as a result of crowding. How many trees should be planted on an acre in order to get the highestyield?

In order to get the highestyield,

nothing

trees should be planted on an acre.