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SEAMO 2020 — Paper E — Grade 9–10 Question 8

SEAMO · SEAMO 2020 — Paper E — Grade 9–10

Question 8

Positive real numbers $a,b,c$ satisfy $abc(a+b+c)=100$. Find the minimum of $(a+b)(b+c)$.
  1. $10$
  2. $20$
  3. $40$
  4. $48$
  5. None of the above