Numerical Ability - Simplification & Approximation
Simplify: (10% of 240 + √36) ÷ (1/3 of 18)
Simplify: (10% of 240 + √36) ÷ (1/3 of 18)
easy Q12 of 15
Step-by-Step Solution
Step 1: Compute 10% of 240
10% of 240 = (10/100) × 240 = 0.1 × 240 = 24.Step 2: Evaluate the square root
√36 = 6.Step 3: Form the numerator
24 + 6 = 30.Step 4: Compute denominator
(1/3) of 18 = (1/3) × 18 = 6.Step 5: Divide
30 ÷ 6 = 5.Final Answer:
5 → Option B.Quick Check:
5 × 6 = 30 (matches numerator) ✅
Quick Trick: Find simple percentages (10% = divide by 10) and small fractional parts (1/3) mentally first.
Common Mistakes:
- Mixing up numerator and denominator operations or rounding too early.
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