Solved IB ACIO Question
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Q · Arithmetical Reasoningmedium · 45s
Number decreased by 20% to get 72. Find original 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.
0.8 × original =72; original=90.
Final Answer: Option B - 90