Numerical Ability - Simplification & Approximation
Simplify: { [ (40 − 20) ÷ 5 ] × 3 } + 12
Simplify: { [ (40 − 20) ÷ 5 ] × 3 } + 12
hard Q10 of 15
Step-by-Step Solution
Step 1: Solve innermost bracket
(40 − 20) = 20.Step 2: Perform division
20 ÷ 5 = 4.Step 3: Apply multiplication
4 × 3 = 12.Step 4: Perform addition
12 + 12 = 24.Final Answer:
24 → Option C.Quick Check:
(40 − 20 = 20, 20 ÷ 5 = 4, 4 × 3 = 12, 12 + 12 = 24) ✅
Quick Trick: Work innermost to outermost, then add.
Common Mistakes:
- Adding before dividing or ignoring bracket hierarchy.
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