Over a period of 2 years from 2010 to 2012, Stock A and Stock B have changed in value. In 2010, a share of Stock A and a share of Stock B were, together, worth a total of N dollars. Also, in 2010, the ratio of the price of Stock A to Stock B was 0.8. A and B represent the percent change in value of stocks A and B, respectively from 2012 to 2012. The percent change in a quantity X is calculated using the formula:
In the table, select the expression that represents the value of Stock B in 2010 and the expression that represents the ratio of Stock A to Stock B in 2012. Make only two selections, one in each column.
Value of Stock B in 2010 -- Ratio in 2012
I m not getting as to how the ratio in 2012 was comupted? I knw the answer has to be from the last three answers but which one to choose? I just just guessed as you all can see. Either I have gone insane studying for GMAT that I feel some information is missing in the question or I need to go study more till i go insane !
Please come forward and help
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