Suppose that a firm has only one variable input, labor, and firm output is zero when labor is zero. when the firm hires 6 workers the firm produces 90 units of output. fixed costs of production are $6 and the variable cost per unit of labor is $10. the marginal product of the seventh unit of labor is 4. given this information, what is the average variable cost of production when the firm hires 7 workers?
a; $12.67
b; $11
c; 81 cents
d; 75 cents

a

Explanation:

variable cost per unit of labour $12.67

in 2001, dell computer became the world’s largest personal computer vendor, continuing to

gain market share and post profits in an industry struggling with slumping sales and billions of

dollars in losses. dell sells 90% of its pcs directly to the final customer, largely bypassing the

reseller channel that accounts for most of the world’s pc sales. this direct customer relationship

is the key to dell’s business model, and provides distinct advantages over the indirect sales

model. dell’s direct relationship with the customer allows it to tailor its offerings to customer

needs, offer add-on products and services, and use the internet to offer a variety of customer

services. in addition, dell’s pcs are built to customers’ specifications upon receipt of an order,

giving dell additional advantages over indirect pc vendors who must try to forecast demand and

ship products based on those forecasts. dell’s direct sales and build-to-order model has achieved

superior performance in the pc industry in terms of inventory turnover, reduced overhead, cash

conversion, and return on investment (kraemer, et al., 2000).

explanation: