Ключевые слова: 20, 80, abstract, analysis, analyzing, balance, business, businessman, cause, chart, compare, conceptual, economic, economy, education, effect, efficiency, eighty, evaluation, finance, financial, idea, law, letter, management, metaphor, motivation, note, pareto, percent, percentage, performance, plan, principle, productivity, profit, proportion, result, rule, scale, statistic, strategy, success, text, theory, twenty, typography, word, yellow,