Numerical Ability - Simplification & Approximation
Simplify: (25% of 240 + √441) ÷ (1/2 of 18)
Simplify: (25% of 240 + √441) ÷ (1/2 of 18)
medium Q14 of 15
Step-by-Step Solution
Step 1: Compute 25% of 240
25% = 25/100, so 0.25 × 240 = 60.Step 2: Evaluate √441
√441 = 21.Step 3: Form the numerator
60 + 21 = 81.Step 4: Compute denominator
(1/2) × 18 = 9.Step 5: Divide
81 ÷ 9 = 9.Final Answer:
9 → Option D.Quick Check:
9 × 9 = 81 (correct) ✅
Quick Trick: Convert % and fractions first, then handle roots.
Common Mistakes:
- Mis-evaluating square root like √441.
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