Solved IB ACIO Question
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Q · Arithmetical Reasoningmedium · 45s
Average of five numbers is 24. Four numbers are 22, 27, 23, and 26. Find fifth number.
TopicArithmetical Reasoning
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Sum=24×5=120; others sum=98; fifth=22.
Final Answer: Option B — 19