Answer
given,
apple tree in orchard = 30
yield of apple = 450 apples
yield reduced per tree = 8 apples
number of trees added be x
trees added to maximize the yield = ?
total yield = (30 + x)(400 - 8 x )
T = 12000- 240 x + 400 x - 8 x²
T = - 8 x² + 160 x + 12000
max will occur when
![x = (-b)/(2a)](https://img.qammunity.org/2020/formulas/mathematics/high-school/7cxzw70ong961fh7yykx0jcprkmluuak8i.png)
![x = (-160)/(2(-8))](https://img.qammunity.org/2020/formulas/mathematics/high-school/4b7231dueb13r8i2ljeq35ij6lhsrg401p.png)
x = 10 (to be added)
maximum yields = - 8 (10²) + 160 x 10 + 12000
= 12800 apple
maximum yield of the orchard is 12800 apple