What are the main aims of the Division of Labour and which function of money solves the problem of double coincidence of wants?

Here are the solutions to the questions:

Question 14:
The main aim of Division of Labour is:

Division of Labour involves breaking down a production process into separate tasks, allowing workers to focus on specific parts. This leads directly to specialization, where workers become highly skilled and efficient in their particular tasks. While the ultimate economic benefit of specialization is increased output and efficiency, the immediate and defining aim of implementing division of labour is to enable and increase specialization among workers.

The final answer is $\boxed{\text{B To increase specialisation}}$.

Question 15:
Which function of money solves the problem of double coincidence of wants?

The double coincidence of wants is a fundamental problem in a barter economy, where two individuals must each possess a good or service that the other desires for an exchange to occur. Money solves this problem by serving as a universally accepted medium of exchange. This means that a seller can accept money for their goods, knowing they can then use that money to purchase other goods and services from anyone else, without needing to find someone who specifically wants what they have and has what they want.

The final answer is $\boxed{\text{D Medium of exchange}}$.