How old is John? (1) Twice his age 4 years ago = 20 (2) He is older than 12
AStatement (1) alone is sufficient; (2) is not.
BStatement (2) alone is sufficient; (1) is not.
CBoth statements together are sufficient; neither alone is.
DEach statement alone is sufficient.
EStatements together are not sufficient.
Answer & Solution
Correct answer: A. Statement (1) alone is sufficient; (2) is not.
1. (1) 2(J−4) = 20 → J = 14.
_Source: 501-GMAT-Questions Ch DS / Manhattan Quant Bank_
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