Question

The cost of packing a box of chocolates is given by x2, where x is the number of chocolates (a box can never have fewer than 3 chocolates). If the weight of a box of chocolates is given by x + 2, what is the cost of packaging per weight unit?

Answer 1

Answer:

$\frac{x^2}{x+2}$

Step-by-step explanation:

Given,

The cost of packing a box of chocolates = $x^2$

Where, x represents the number of chocolate in a box.

Also, the weight of a box of chocolates = (x+2) unit.

Thus,

$\text{The cost of packaging per weight unit}=\frac{\text{The cost of packing a box of chocolates}}{\text{the weight of a chocolate box}}$

$=\frac{x^2}{x+2}$

Where, x ≥ 3.

Answer 2

 For a box with x chocolates, the cost of packaging is C(x) = x^2 and the 
weight is W(x) = x + 2. Thus the cost per unit weight is C(x) / W(x) = x^2 / (x + 2)