How Much Should I Reinvest in a Business?

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Suppose you invest in a business and receive some return. What do you do with it? On the one hand you could just leave it as cash (or in whatever form it is), or you could use that return to reinvest in the same business and expect it to give you a larger return.
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Contributed by: Lucas Tsui (July 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
Assume that you initially invested a certain amount of money into a business to get some revenue. The axis represents the percent of the revenue that is reinvested and the
axis represents the total income for the corresponding reinvestment.
For an investment with a return of 100% to 200%, using a retention rate of 80% could maximize income. Though this is not strictly speaking an example of the 80-20 rule, it is still interesting.
Permanent Citation
"How Much Should I Reinvest in a Business?"
http://demonstrations.wolfram.com/HowMuchShouldIReinvestInABusiness/
Wolfram Demonstrations Project
Published: July 18 2011