Question

What is the value of $n$ in the equation $-25+19+n=s$?
(1) $s=2$
(2) $\frac{n}{s}=4$

• 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 sufficient, but neither statement alone is sufficient.
• D. Each statement alone is sufficient.
• E. Statements (1) and (2) together are not sufficient.

Answer 1

The correct option is D Each statement alone is sufficient.

• If $s=2$, then the equation becomes $-25+19+n=2$; So, $n=8$. Thus, statement 1 is sufficient.
• From statement 2, , then n = 4s.Substituting the value of n in the main equation $-25+19+4s=s$ we can get the value of s as 2. Once s is found to be 2, the original equation can be solved as above; SUFFICIENT.
• The correct answer is D; each statement alone is sufficient