When two or more items are used in combination to produce a final product,which type of demand are they said to have?

Question

Quizplus · Accepted Answer

When two or more items are used in combination to produce a final product, they are said to have joint demand. This means that the demand for each item is related to the demand for the other items. For example, the demand for gasoline and cars is joint since cars require gasoline to run.

When Two or More Items Are Used in Combination to Produce