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# A certain portfolio consisted of 5 stocks, priced at \$20, \$35, \$40, \$45, and \$70, respectively. On a givenday, the price of one stock increased by 15%, while the price of another stock decreased by 35% and theprices of the remaining three remained constant. If the average price of a stock in the portfolio rose byapproximately 2%, which of the following could be the prices of the shares that remained constant?a)\$20, \$35, and \$70b)\$20, \$45, and \$70c)\$20, \$35, and \$40d)\$35, \$40, and \$70e)\$35, \$40, and \$45Correct answer is option 'E'. Can you explain this answer? Related Test: Test: Mean

## GMAT Question

 Preitee Ranjan Pradhan May 09, 2020
Very good question.
see 35,40,45 are in AP ,so average will be 40\$
that means the average we are getting for all 5 as 42 because of 20\$ and 70\$.question is which will contribute to 2% that is .84\$ increment in average value.the answer is who was actually contributing prior to change made that is average rising from 40 to 42 was responsible by 20 and 70 only.so further increment beyond 42 to 42.84 will obviously be by 20 and 70.so E is the answer.tricky but logical question.no paper pen required.

 Urja Palkar May 04, 2020