Final answer:
The Plus Ten Percent rule is favored by economists and the public for increasing payments received for work and it may also lead to cost savings, less work, and earlier retirement. It also provides mathematical convenience for financial projections.
Step-by-step explanation:
Two advantages of the Plus Ten Percent rule are its popularity with economists and the general public due to its effective way of increasing the payment received for work, and its side benefit of potentially saving money, which may allow individuals to work less and possibly retire earlier. This rule creates a mathematical convenience by allowing for a factor of 10 increase in rates over a century, aligning closely with the compound interest results often used in financial calculations. Additionally, when applied to regulations such as cost-plus regulations, although there are pitfalls, it provides reassurance that providers will receive a reimbursement that includes their costs plus a bit more, incentivizing the continued production of goods and services.