BTGmoderatorDC wrote:What is the value of n in the equation: -25 + 19 + n = s ?
(1) s = 2
(2) n/s = 4
Given: -25 + 19 + n = s
Simplify: -6 + n = s
Add 6 to both sides to get:
n = s + 6
Target question: What is the value of n?
Statement 1: s = 2
We already know that
n = s + 6
Replace s with 2 to get:
n = 2 + 6 = 8
The answer to the target question is
n = 8
Since we can answer the
target question with certainty, statement 1 is SUFFICIENT
Statement 2: n/s = 4
Multiply both sides by s to get: n = 4s
Divide both sides by 4 to get: n/4 = s
We already know that
n = s + 6
Replace s with s with n/4 to get:
n = n/4 + 6
Multiply both sides by 4 to get: 4n = n + 24
Subtract n from both sides to get: 3n = 24
Solve, n = 8
The answer to the target question is
n = 8
Since we can answer the
target question with certainty, statement 2 is SUFFICIENT
Answer: D
Cheers,
Brent
