If marginal utility from consuming an extra unit of a good is positive,then the consumer's total utility must increase as more of the good is consumed.

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Quizplus · Accepted Answer

Marginal utility measures the additional satisfaction a consumer gains from consuming one more unit of a good. If this marginal utility is positive, it means that the consumer is gaining additional satisfaction from consuming the extra unit. Therefore, if the consumer continues to consume more units of the good, the total utility will increase because each additional unit is adding to the overall satisfaction.

If Marginal Utility from Consuming an Extra Unit of a Good