Question 73

A company's stock price decreased by 20% on Monday, 50% on Tuesday, 3% on Wednesday, and increased by 50% on Thursday and 20% on Friday. What can be concluded about the stock price at the end of Friday compared to the beginning of Monday?

Solution

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Let's take the sock price on Monday start to be 100

Using the multiplication factor for all the increases and decreases through the week, we get:

$$100\times\ \frac{4}{5}\times\ \frac{1}{2}\times\ 0.97\times\ \frac{3}{2}\times\ \frac{6}{5}$$

$$97\times\ \frac{18}{25}$$

This would be less than 97. 

Hence, Option A would be the correct answer. 

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