The RC and More Superstore decides to track customer complaints as part of their ongoing customer satisfaction improvement program. After collecting data for two months, their check sheet appears as follows: 
If they construct a Pareto chart, what is the cumulative percentage of the two leftmost bars?
Definitions:
Marginal Benefit
The additional benefit obtained from consuming one more unit of a product or service.
Marginal Benefit
The additional benefit received from consuming one more unit of a product or service.
Total Benefit
The overall advantages or gains received from a good or service, including both tangible and intangible elements.
Football Games
Organized sporting events involving two teams playing football (soccer in some countries) under a set of rules to score goals against each other.
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