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[学习/校园/考试] 最后一次求助该题

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匿名
匿名  发表于 2015-12-8 16:41:05 |阅读模式
"in the signaling model, assume high school graduates are paid a stream of income whose present value is $200,000. College graduates are paid a stream of income whose present value is X. College education costs higher-productivity workers $50,000 and lower-productivity workers $150,000. What value of X will cause higher-productivity workers to go to college and lower-productivity workers to not go to college?"


答案是275,000 求问怎么算的

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