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level 3 2011 mock 第39题 effective interest rate

level 3 2011 mock 第39题 effective interest rate 
不懂了,求助:

what is the effective interst rate at the reset of Texmaco loan, assuming a collar constructedf rom the loan and the option described in exhibit 2?

initial的premium cost  of collar ( sell call, buy put) 为什么是 130,000- 100,000 而不是 100,000- 130,000 不是应该卖出的 sell call premium 加进来,买入的put option是cost, 减去么? 急死我了。。。

多谢多谢!!

选A没错啊。。你题目看错了?

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when we say 'cost' in positive term, it literally means a negative value...
e.g., this shirt costs me $20, rather -$20

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that's a loan ,not a borrow. do not confuse with them .

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