2009 · Q95
If a + b = 2m 2 , b + c = 6m, a + c = 2, where m is a real number and a ≤ b ≤ c, then which one of the following is correct?
Elementary MathematicsAlgebra
- A0 ≤ m ≤ 1/2
- B– 1 ≤ m ≤ 0
- C1/3 ≤ m ≤ 1
- D1 < m ≤ 2
Explanation
a≤b≤c gives 1/3 ≤ m ≤ 1.