Solved IB ACIO Question
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Q · Arithmetical Reasoningmedium · 45s
Two numbers are in ratio 4:5 and sum 81. Find smaller 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.
4x+5x=81; x=9; smaller=36.
Final Answer: Option B - 30