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-(Figure: Marginal Benefits and Marginal Costs)Use Figure: Marginal Benefits and Marginal Costs.More time spent studying economics adds points to economics scores (MB)but subtracts points from accounting scores (MC).The marginal benefit of studying economics for two hours is _____ points,and the marginal cost is _____ points.

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Use the following to answer question: 
-(Figure: Marginal Benefits and Marginal Costs)Use Figure: Marginal Benefits and Marginal Costs.More time spent studying economics adds points to economics scores (MB)but subtracts points from accounting scores (MC).The marginal benefit of studying economics for two hours is _____ points,and the marginal cost is _____ points.

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The marginal benefit (MB) of studying economics for two hours is 30 points, as seen from the increase in economics scores. The marginal cost (MC), which represents the subtraction from accounting scores, is 10 points for the same duration.

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