Q79. If 20% of total balls in A are taken out and put into bag C, and the number of red balls in C becomes 400, find the blue bal…

Question

Q79. If 20% of total balls in A are taken out and put into bag C, and the number of red balls in C becomes 400, find the blue balls taken out from bag A.

1. A. 40
2. B. 50
3. C. 20 (Correct answer)
4. D. 30
5. E. 55

Correct Answer

Option C — 20

Detailed Solution & Explanation

The correct answer is 20.

Key Points

• 20% of Total(A) = 0.20 × 240 = 48 balls removed.
• Blue% in A = 37.5%, so blue balls removed = 0.375 × 48 ≈ 18 ≈ 20 (nearest option).
• Note: slight inconsistency in memory-based data.