BTGmoderatorLU wrote:Source: Economist GMAT
What percent of the children in the class are holding a Popsicle?
(1) Half of the girls in the class are holding a Popsicle.
(2) Half of the boys in the class are holding a Popsicle.
The OA is C.
Let's take each statement one by one.
(1) Half of the girls in the class are holding a Popsicle.
No information about the boys. Insufficient.
(2) Half of the boys in the class are holding a Popsicle.
No information about the girls. Insufficient.
(1) and (2) together
Say there are x number of boys and y number of girls in the class.
Number of boys holding the Popsicles = x/2
Number of girls holding the Popsicles = y/2
Number of children holding the Popsicles = x/2 + y/2 = (x + y)/2
Percent of the children holding Popsicles = [{(x + y)/2} / (x + y)]*100% = 50%. Sufficient.
The correct answer:
C
Hope this helps!
What would be the answer if Statement 2 is changed to:
(2) One-third of the boys in the class are holding a Popsicle.
-Jay
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