If x and y are positive, what’s the value of x ?
(1) x = 3.927y
(2) y = 2.279
Value
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(1) no clue what y is, insufficient.smclean23 wrote:If x and y are positive, what’s the value of x ?
(1) x = 3.927y
(2) y = 2.279
(2) no info about x, insufficient.
Together: we can substitute in the value for y from (2) into the equation from (1) and get a definite value for x: sufficient, choose (c).
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