sandy wrote:
Quantity A |
Quantity B |
w + d |
c + z |
Notice that the line passing through (0,0) and (6,6) has the equation y = x.
That tells that, for every point ON the line, the x-coordinate is EQUAL to the y-coordinate.
For example, some points on the line include (1,1), (4,4), (18,18), etc
Also notice that the line divides the quadrant into TWO REGIONS: a region ABOVE the line, and a region BELOW the line.
ALL points that lie in the region ABOVE the line share an important characteristic: the x-coordinate is LESS THAN to the y-coordinate.
For example, some points in this region include (1,4), (3,9), (11,13), etc
ALL points that lie in the region BELOW the line share an important characteristic: the x-coordinate is GREATER THAN to the y-coordinate.
For example, some points in this region include (3,2), (7,1), (11,5), etc
Since the point, (c, d) lies in the region ABOVE the line, we can be certain that
c < dSince the point, (w, z) lies in the region BELOW the line, we can be certain that
z < w
If we add the two inequalities, we get:
c + z < d + wAnswer: A
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Brent Hanneson – Creator of greenlighttestprep.com
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