theachiever wrote:If TG>0 and G is negative which of the following must be positive?
A.T+G
B.2T+G
C.T-G
D.G-T
E.-G-T
Step 1: If G is negative, and (T)(G) is positive, then we can be certain that T is also negative.
Step 2: Determine which of the following
must be positive?
A) T+G = negative + negative = negative. Since T+G need not be positive, eliminate it.
B) 2T+G = 2(negative) + negative = negative + negative = negative. Eliminate it.
C) T-G = negative - negative. This
could be positive, but it need not be. For example, (-2) - (-1) = -1. Since T-G isn't
always positive, eliminate it.
D) G-T = negative - negative = This
could be positive, but it need not be. For example, (-2) - (-1) = -1. Since G-T isn't
always positive, eliminate it.
By the process of elimination,
E must be the correct answer. Take it and move onto the next question.
Cheers,
Brent
