sandy wrote:
a and b are positive integers.
Quantity A: \(a/b\)
Quantity B: \(\frac{(a+3)}{(b+3)}\)
One of my favorite QC strategies is called "Looking for Equality" (free video on this topic here:
http://www.greenlighttestprep.com/modul ... on?id=1099).
In this strategy, I first look for values of x such that the two quantities are equal. This often involves checking some easy numbers like 0, 1, -1 etc.
Consider these two cases:
Case #2: a = 1 and b = 1
Quantity A: a/b = 1/1 = 1
Quantity B: (a+3)/(b+3) = (1+3)/(1+3) = 4/4 = 1
Since the two quantities are EQUAL, the correct answer is either C or D
Now try some other values of a and b:
Case #2: a = 1 and b = 2
Quantity A: a/b = 1/2
Quantity B: (a+3)/(b+3) = (1+3)/(2+3) = 4/5
Since the two quantities are NOT EQUAL, the correct answer is D
Cheers,
Brent
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Brent Hanneson - founder of Greenlight Test PrepSign up for our GRE Question of the Day emails