Staff Selection Commission Quantitative Aptitude — Question 278

Question

If 40% of a number is 80 more than 20% of the number, find the number

1. 400
2. 200
3. 300
4. 500

Correct answer

A — 400

Explanation (English)

0.4x - 0.2x = 80. 0.2x = 80, x = 400

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