Numerical Ability - Simplification & Approximation
Simplify: (10% of 150 + √25) ÷ (1/5 of 10)
Simplify: (10% of 150 + √25) ÷ (1/5 of 10)
easy Q2 of 15
Step-by-Step Solution
Step 1: Percent:
10% of 150 = (10/100) × 150 = 0.1 × 150 = 15.Step 2: Root:
√25 = 5.Step 3: Numerator:
15 + 5 = 20.Step 4: Denominator:
1/5 of 10 = (1/5) × 10 = 2.Step 5: Division:
20 ÷ 2 = 10.Final Answer:
10 → Option B.Quick Check:
10 × 2 = 20 ✅
Quick Trick: 10% is just divide by 10 — use that for quick mental math.
Common Mistakes:
- Mixing numerator and denominator steps or forgetting parentheses.
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