Which of the following expenses is *not* apportined in proportion to turnover?

The expense that is not apportioned in proportion to turnover is **rent**. To understand why, let's first understand what it means to apportion an expense in proportion to turnover. When an expense is apportioned in proportion to turnover, it means that the amount of the expense is allocated based on the amount of revenue or sales generated by a business. Now, let's look at the other expenses listed: - **Commission**: This expense is typically a percentage of the sales or revenue earned by the business. So, it is directly proportional to turnover. The more sales or revenue generated, the higher the commission expense will be. - **Discount allowed**: This expense is also directly related to turnover. When a business offers discounts to customers, the amount of the discount is deducted from the revenue earned. So, the higher the turnover, the higher the discount allowed expense. - **Carriage outwards**: This expense refers to the cost of delivering goods to customers. It is directly related to turnover because the more goods sold, the more deliveries need to be made and therefore the higher the carriage outwards expense. Now, let's focus on **rent**. Rent is a fixed expense that a business pays for using a physical space, such as a store or office. It is not directly related to the amount of sales or revenue generated. Even if a business has higher sales or turnover, the rent expense remains the same. Therefore, it is not apportioned in proportion to turnover. In summary, among the given options, the expense that is not apportioned in proportion to turnover is **rent**.