Numerical Ability - Simplification & Approximation
If 40% of 400 = ? × 20, find the value of ?.
If 40% of 400 = ? × 20, find the value of ?.
medium Q6 of 15
Step-by-Step Solution
Step 1: Compute 40% of 400
(40/100) × 400 = 160.Step 2: Form the equation
160 = ? × 20.Step 3: Divide to isolate ?
? = 160 ÷ 20 = .Final Answer:
8 → Option C.Quick Check:
8 × 20 = 160 ✅
Quick Trick: 10% of 400 = 40; multiply by 4 = 160.
Common Mistakes:
- Using 40 × 400 instead of (40/100) × 400.
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