How does 80 - 20 rule apply in projects?

The80-20 rule can be applied to projects in several ways. For example20 percent of the work (the first10 percent and the last10 percent) amount to the use of80 percent of your time and resources. The principle of the80/20 by Pareto outlines the necessity of focussing on20 percent of your productions, performance, timings, management because they are responsible for80 percent of the accomplishment. In projects,20% of your efforts, timings, planning, preparing, implementing will produce80% of your end result.100% must be given into20% to generate an outcome of80%.