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1. from question stem. B+V+G =360 2. from statement 1. B= 144 NOT SUFF ALONE 3. from statement 2. B= .66( V+G) NOT SUFF ALONE
Now, i just saw 3 equations , and 3 variables. and proceeded that with 3 equations 3 variables can be found and , therefore , chose 'C' as the answer. Why did it go wrong?
pl help with the explanation.....
The point is that we don't have 3 distinct equations: the third equation is the same as the second one.
If a certain charity collected a total of 360 books, videos, and board games, how many videos did the charity collect?
Given: B + V + G = 360.
(1) The number of books that the charity collected was 40 percent of the total number of books, videos, and board games that the charity collected --> B = 2/5*360 --> B = 144. Not sufficient.
(2) The number of books that charity collected was 66 2/3 percent of the total number of videos and board games that charity collected --> B = 2/3*(V + G) --> B = 2/3*(360 - B) --> B = 144. Not sufficient.
(1)+(2) We only know that B = 144 and B + V + G = 360 (V + G = 216) --> we cannot solve for V. Not sufficient.
Re: If a certain charity collected a total of 360 books, videos [#permalink]
03 Jan 2015, 21:04
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