As it places its order for truck tires with Michelin, South Side Industrial Supply realizes that it must also place an order for valve stems and balancing weights for the truck tires. Such business products are characterized as having demand.

The correct word for the blank space is: joint.

Explanation:

Joint demand refers to the demand for products and services that are dependent on each other. In such cases, those goods are complementary but they can be acquired separately if necessary. An example of goods with joint demand would be tea and sugar or a printer and ink.

 Required reserve=$36  million

Explanation:

In a fractional banking system, banks are required to maintain  a proportion of  their total deposit for precautionary reasons by banking authority.

The proportion is known as the required reserve ratio and is always given as a percentage of the total deposit.

The required reserve = required reserve (%) × Total deposit

                                  = 12%× 300 million

                                   =36  million

 Required reserve=$36  million