If w+z = 28, what is the value of wz?
(1) w and z are positive integers.
(2) w and z are consecutive odd integers
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are suffcient, but NEITHER statement alone is sufficient.
D. EACH statement ALONE is sufficient
E. Statements (1) and (2) TOGETHER are NOT sufficient.
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1 comment:
Statement (1) is insufficient as many positive integer pairs w,z could satisfy the sum 28 and provide much different values for wz.
Statement (2) leads to one single w,z pair of odd integers. And this is enough to determinate wz.
BTW the number pair should be the pair of odd numbers around 28/2, that is 13 and 15.
So the correct answer will be (B)
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